diff --git a/Classes/PHPExcel/Worksheet.php b/Classes/PHPExcel/Worksheet.php
index 8964dff5..52711229 100644
--- a/Classes/PHPExcel/Worksheet.php
+++ b/Classes/PHPExcel/Worksheet.php
@@ -1033,7 +1033,7 @@ class PHPExcel_Worksheet implements PHPExcel_IComparable
 	/**
 	 * Set a cell value by using numeric cell coordinates
 	 *
-	 * @param string	$pColumn		Numeric column coordinate of the cell
+	 * @param string	$pColumn		Numeric column coordinate of the cell (A = 0)
 	 * @param string	$pRow			Numeric row coordinate of the cell
 	 * @param mixed		$pValue			Value of the cell
 	 * @param bool		$returnCell		Return the worksheet (false, default) or the cell (true)
diff --git a/Classes/PHPExcel/Writer/CSV.php b/Classes/PHPExcel/Writer/CSV.php
index 212676cf..be9761f3 100644
--- a/Classes/PHPExcel/Writer/CSV.php
+++ b/Classes/PHPExcel/Writer/CSV.php
@@ -103,7 +103,7 @@ class PHPExcel_Writer_CSV implements PHPExcel_Writer_IWriter {
 	 * Save PHPExcel to file
 	 *
 	 * @param	string		$pFilename
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	public function save($pFilename = null) {
 		// Fetch sheet
@@ -117,7 +117,7 @@ class PHPExcel_Writer_CSV implements PHPExcel_Writer_IWriter {
 		// Open file
 		$fileHandle = fopen($pFilename, 'wb+');
 		if ($fileHandle === false) {
-			throw new Exception("Could not open file $pFilename for writing.");
+			throw new PHPExcel_Writer_Exception("Could not open file $pFilename for writing.");
 		}
 
 		if ($this->_excelCompatibility) {
@@ -278,7 +278,7 @@ class PHPExcel_Writer_CSV implements PHPExcel_Writer_IWriter {
 	 *
 	 * @param	mixed	$pFileHandle	PHP filehandle
 	 * @param	array	$pValues		Array containing values in a row
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	private function _writeLine($pFileHandle = null, $pValues = null) {
 		if (is_array($pValues)) {
@@ -313,7 +313,7 @@ class PHPExcel_Writer_CSV implements PHPExcel_Writer_IWriter {
 				fwrite($pFileHandle, $line);
 			}
 		} else {
-			throw new Exception("Invalid data row passed to CSV writer.");
+			throw new PHPExcel_Writer_Exception("Invalid data row passed to CSV writer.");
 		}
 	}
 
diff --git a/Classes/PHPExcel/Writer/Excel2007.php b/Classes/PHPExcel/Writer/Excel2007.php
index acf6072f..e2ec139c 100644
--- a/Classes/PHPExcel/Writer/Excel2007.php
+++ b/Classes/PHPExcel/Writer/Excel2007.php
@@ -191,7 +191,7 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 	 * Save PHPExcel to file
 	 *
 	 * @param 	string 		$pFilename
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function save($pFilename = null)
 	{
@@ -245,7 +245,7 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 			// Try opening the ZIP file
 			if ($objZip->open($pFilename, $zipOverWrite) !== true) {
 				if ($objZip->open($pFilename, $zipCreate) !== true) {
-					throw new Exception("Could not open " . $pFilename . " for writing.");
+					throw new PHPExcel_Writer_Exception("Could not open " . $pFilename . " for writing.");
 				}
 			}
 
@@ -375,18 +375,18 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 
 			// Close file
 			if ($objZip->close() === false) {
-				throw new Exception("Could not close zip file $pFilename.");
+				throw new PHPExcel_Writer_Exception("Could not close zip file $pFilename.");
 			}
 
 			// If a temporary file was used, copy it to the correct file stream
 			if ($originalFilename != $pFilename) {
 				if (copy($pFilename, $originalFilename) === false) {
-					throw new Exception("Could not copy temporary zip file $pFilename to $originalFilename.");
+					throw new PHPExcel_Writer_Exception("Could not copy temporary zip file $pFilename to $originalFilename.");
 				}
 				@unlink($pFilename);
 			}
 		} else {
-			throw new Exception("PHPExcel object unassigned.");
+			throw new PHPExcel_Writer_Exception("PHPExcel object unassigned.");
 		}
 	}
 
@@ -394,13 +394,13 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 	 * Get PHPExcel object
 	 *
 	 * @return PHPExcel
-	 * @throws Exception
+	 * @throws PHPExcel_Writer_Exception
 	 */
 	public function getPHPExcel() {
 		if ($this->_spreadSheet !== null) {
 			return $this->_spreadSheet;
 		} else {
-			throw new Exception("No PHPExcel assigned.");
+			throw new PHPExcel_Writer_Exception("No PHPExcel assigned.");
 		}
 	}
 
@@ -408,7 +408,7 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 	 * Set PHPExcel object
 	 *
 	 * @param 	PHPExcel 	$pPHPExcel	PHPExcel object
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 * @return PHPExcel_Writer_Excel2007
 	 */
 	public function setPHPExcel(PHPExcel $pPHPExcel = null) {
@@ -556,7 +556,7 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
 	 *
 	 * @param 	boolean 	$pValue
 	 * @param	string		$pDirectory		Disk caching directory
-	 * @throws	Exception	Exception when directory does not exist
+	 * @throws	PHPExcel_Writer_Exception	Exception when directory does not exist
 	 * @return PHPExcel_Writer_Excel2007
 	 */
 	public function setUseDiskCaching($pValue = false, $pDirectory = null) {
@@ -566,7 +566,7 @@ class PHPExcel_Writer_Excel2007 implements PHPExcel_Writer_IWriter
     		if (is_dir($pDirectory)) {
     			$this->_diskCachingDirectory = $pDirectory;
     		} else {
-    			throw new Exception("Directory does not exist: $pDirectory");
+    			throw new PHPExcel_Writer_Exception("Directory does not exist: $pDirectory");
     		}
 		}
 		return $this;
diff --git a/Classes/PHPExcel/Writer/Excel2007/Chart.php b/Classes/PHPExcel/Writer/Excel2007/Chart.php
index 6459c74b..2b858d4c 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Chart.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Chart.php
@@ -40,7 +40,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Chart				$pChart
 	 * @return 	string 						XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeChart(PHPExcel_Chart $pChart = null)
 	{
@@ -120,7 +120,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param	PHPExcel_Chart_Title		$title
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeTitle(PHPExcel_Chart_Title $title = null, $objWriter)
 	{
@@ -164,7 +164,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param	PHPExcel_Chart_Legend		$legend
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeLegend(PHPExcel_Chart_Legend $legend = null, $objWriter)
 	{
@@ -217,7 +217,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param	PHPExcel_Chart_Title		$xAxisLabel
 	 * @param	PHPExcel_Chart_Title		$yAxisLabel
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePlotArea(PHPExcel_Chart_PlotArea $plotArea,
 									PHPExcel_Chart_Title $xAxisLabel = NULL,
@@ -355,7 +355,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Chart_Layout		$chartLayout	Chart layout
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDataLbls($objWriter, $chartLayout)
 	{
@@ -410,7 +410,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	string						$id1
 	 * @param 	string						$id2
 	 * @param 	boolean						$isMultiLevelSeries
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeCatAx($objWriter, PHPExcel_Chart_PlotArea $plotArea, $xAxisLabel, $groupType, $id1, $id2, $isMultiLevelSeries)
 	{
@@ -533,7 +533,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	string						$id1
 	 * @param 	string						$id2
 	 * @param 	boolean						$isMultiLevelSeries
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeValAx($objWriter, PHPExcel_Chart_PlotArea $plotArea, $yAxisLabel, $groupType, $id1, $id2, $isMultiLevelSeries)
 	{
@@ -649,7 +649,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Chart_PlotArea		$plotArea
 	 * @return	string|array
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private static function _getChartType($plotArea)
 	{
@@ -664,7 +664,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 			}
 			$chartType = array_unique($chartTypes);
 			if (count($chartTypes) == 0) {
-				throw new Exception('Chart is not yet implemented');
+				throw new PHPExcel_Reader_Exception('Chart is not yet implemented');
 			}
 		}
 
@@ -681,7 +681,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param	boolean							&$valIsMultiLevelSeries	Is value set a multi-series set
 	 * @param	string							&$plotGroupingType		Type of grouping for multi-series values
 	 * @param	PHPExcel_Worksheet 				$pSheet
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePlotGroup( $plotGroup,
 									  $groupType,
@@ -872,7 +872,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param	PHPExcel_Chart_DataSeriesValues		$plotSeriesLabel
 	 * @param 	PHPExcel_Shared_XMLWriter 			$objWriter 			XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePlotSeriesLabel($plotSeriesLabel, $objWriter)
 	{
@@ -910,7 +910,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param	string								$groupType			Type of plot for dataseries
 	 * @param	string								$dataType			Datatype of series values
 	 * @param	PHPExcel_Worksheet 					$pSheet
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePlotSeriesValues( $plotSeriesValues,
 											 $objWriter,
@@ -1010,7 +1010,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param	PHPExcel_Chart_DataSeriesValues		$plotSeriesValues
 	 * @param 	PHPExcel_Shared_XMLWriter 			$objWriter 			XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeBubbles($plotSeriesValues, $objWriter, PHPExcel_Worksheet $pSheet)
 	{
@@ -1056,7 +1056,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param	PHPExcel_Chart_Layout		$layout
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeLayout(PHPExcel_Chart_Layout $layout = NULL, $objWriter)
 	{
@@ -1124,7 +1124,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * Write Alternate Content block
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeAlternateContent($objWriter)
 	{
@@ -1153,7 +1153,7 @@ class PHPExcel_Writer_Excel2007_Chart extends PHPExcel_Writer_Excel2007_WriterPa
 	 * Write Printer Settings
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePrintSettings($objWriter)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Comments.php b/Classes/PHPExcel/Writer/Excel2007/Comments.php
index 4c6a9f7a..5859896b 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Comments.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Comments.php
@@ -40,7 +40,7 @@ class PHPExcel_Writer_Excel2007_Comments extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Worksheet				$pWorksheet
 	 * @return 	string 								XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeComments(PHPExcel_Worksheet $pWorksheet = null)
 	{
@@ -98,7 +98,7 @@ class PHPExcel_Writer_Excel2007_Comments extends PHPExcel_Writer_Excel2007_Write
 	 * @param	string							$pCellReference		Cell reference
 	 * @param 	PHPExcel_Comment				$pComment			Comment
 	 * @param	array							$pAuthors			Array of authors
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function _writeComment(PHPExcel_Shared_XMLWriter $objWriter = null, $pCellReference = 'A1', PHPExcel_Comment $pComment = null, $pAuthors = null)
 	{
@@ -120,7 +120,7 @@ class PHPExcel_Writer_Excel2007_Comments extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Worksheet				$pWorksheet
 	 * @return 	string 								XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeVMLComments(PHPExcel_Worksheet $pWorksheet = null)
 	{
@@ -193,7 +193,7 @@ class PHPExcel_Writer_Excel2007_Comments extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 			XML Writer
 	 * @param	string							$pCellReference		Cell reference
 	 * @param 	PHPExcel_Comment				$pComment			Comment
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function _writeVMLComment(PHPExcel_Shared_XMLWriter $objWriter = null, $pCellReference = 'A1', PHPExcel_Comment $pComment = null)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/ContentTypes.php b/Classes/PHPExcel/Writer/Excel2007/ContentTypes.php
index d701a76c..a9b1dd92 100644
--- a/Classes/PHPExcel/Writer/Excel2007/ContentTypes.php
+++ b/Classes/PHPExcel/Writer/Excel2007/ContentTypes.php
@@ -41,7 +41,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @param	boolean		$includeCharts	Flag indicating if we should include drawing details for charts
 	 * @return 	string 						XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeContentTypes(PHPExcel $pPHPExcel = null, $includeCharts = FALSE)
 	{
@@ -205,7 +205,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 	 *
 	 * @param 	string	$pFile	Filename
 	 * @return 	string	Mime Type
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	private function _getImageMimeType($pFile = '')
 	{
@@ -213,7 +213,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 			$image = getimagesize($pFile);
 			return image_type_to_mime_type($image[2]);
 		} else {
-			throw new Exception("File $pFile does not exist");
+			throw new PHPExcel_Writer_Exception("File $pFile does not exist");
 		}
 	}
 
@@ -223,7 +223,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	string 						$pPartname 		Part name
 	 * @param 	string 						$pContentType 	Content type
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	private function _writeDefaultContentType(PHPExcel_Shared_XMLWriter $objWriter = null, $pPartname = '', $pContentType = '')
 	{
@@ -234,7 +234,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 			$objWriter->writeAttribute('ContentType', 	$pContentType);
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Writer_Exception("Invalid parameters passed.");
 		}
 	}
 
@@ -244,7 +244,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	string 						$pPartname 		Part name
 	 * @param 	string 						$pContentType 	Content type
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	private function _writeOverrideContentType(PHPExcel_Shared_XMLWriter $objWriter = null, $pPartname = '', $pContentType = '')
 	{
@@ -255,7 +255,7 @@ class PHPExcel_Writer_Excel2007_ContentTypes extends PHPExcel_Writer_Excel2007_W
 			$objWriter->writeAttribute('ContentType', 	$pContentType);
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Writer_Exception("Invalid parameters passed.");
 		}
 	}
 }
diff --git a/Classes/PHPExcel/Writer/Excel2007/DocProps.php b/Classes/PHPExcel/Writer/Excel2007/DocProps.php
index ee0fa748..67ad72df 100644
--- a/Classes/PHPExcel/Writer/Excel2007/DocProps.php
+++ b/Classes/PHPExcel/Writer/Excel2007/DocProps.php
@@ -40,7 +40,7 @@ class PHPExcel_Writer_Excel2007_DocProps extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeDocPropsApp(PHPExcel $pPHPExcel = null)
 	{
@@ -137,7 +137,7 @@ class PHPExcel_Writer_Excel2007_DocProps extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeDocPropsCore(PHPExcel $pPHPExcel = null)
 	{
@@ -204,7 +204,7 @@ class PHPExcel_Writer_Excel2007_DocProps extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeDocPropsCustom(PHPExcel $pPHPExcel = null)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Drawing.php b/Classes/PHPExcel/Writer/Excel2007/Drawing.php
index 71d6561e..fbb35566 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Drawing.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Drawing.php
@@ -42,7 +42,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 * @param	int					&$chartRef		Chart ID
 	 * @param	boolean				$includeCharts	Flag indicating if we should include drawing details for charts
 	 * @return 	string 				XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeDrawings(PHPExcel_Worksheet $pWorksheet = null, &$chartRef, $includeCharts = FALSE)
 	{
@@ -95,7 +95,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Chart				$pChart
 	 * @param 	int							$pRelationId
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function _writeChart(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Chart $pChart = null, $pRelationId = -1)
 	{
@@ -167,7 +167,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 * @param 	PHPExcel_Shared_XMLWriter			$objWriter 		XML Writer
 	 * @param 	PHPExcel_Worksheet_BaseDrawing		$pDrawing
 	 * @param 	int									$pRelationId
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function _writeDrawing(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet_BaseDrawing $pDrawing = null, $pRelationId = -1)
 	{
@@ -375,7 +375,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Writer_Exception("Invalid parameters passed.");
 		}
 	}
 
@@ -384,7 +384,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 *
 	 * @param 	PHPExcel_Worksheet				$pWorksheet
 	 * @return 	string 								XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeVMLHeaderFooterImages(PHPExcel_Worksheet $pWorksheet = null)
 	{
@@ -532,7 +532,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 			XML Writer
 	 * @param	string							$pReference			Reference
 	 * @param 	PHPExcel_Worksheet_HeaderFooterDrawing	$pImage		Image
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function _writeVMLHeaderFooterImage(PHPExcel_Shared_XMLWriter $objWriter = null, $pReference = '', PHPExcel_Worksheet_HeaderFooterDrawing $pImage = null)
 	{
@@ -574,7 +574,7 @@ class PHPExcel_Writer_Excel2007_Drawing extends PHPExcel_Writer_Excel2007_Writer
 	 *
 	 * @param 	PHPExcel							$pPHPExcel
 	 * @return 	PHPExcel_Worksheet_Drawing[]		All drawings in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function allDrawings(PHPExcel $pPHPExcel = null)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Rels.php b/Classes/PHPExcel/Writer/Excel2007/Rels.php
index 5a1271c0..f21bcea2 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Rels.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Rels.php
@@ -40,7 +40,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeRelationships(PHPExcel $pPHPExcel = null)
 	{
@@ -106,7 +106,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeWorkbookRelationships(PHPExcel $pPHPExcel = null)
 	{
@@ -177,7 +177,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 * @param 	int					$pWorksheetId
 	 * @param	boolean				$includeCharts	Flag indicating if we should write charts
 	 * @return 	string 				XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeWorksheetRelationships(PHPExcel_Worksheet $pWorksheet = null, $pWorksheetId = 1, $includeCharts = FALSE)
 	{
@@ -286,7 +286,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 * @param	int					&$chartRef		Chart ID
 	 * @param	boolean				$includeCharts	Flag indicating if we should write charts
 	 * @return 	string 				XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeDrawingRelationships(PHPExcel_Worksheet $pWorksheet = null, &$chartRef, $includeCharts = FALSE)
 	{
@@ -350,7 +350,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 *
 	 * @param 	PHPExcel_Worksheet			$pWorksheet
 	 * @return 	string 						XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeHeaderFooterDrawingRelationships(PHPExcel_Worksheet $pWorksheet = null)
 	{
@@ -394,7 +394,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 	 * @param 	string						$pType			Relationship type
 	 * @param 	string 						$pTarget		Relationship target
 	 * @param 	string 						$pTargetMode	Relationship target mode
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeRelationship(PHPExcel_Shared_XMLWriter $objWriter = null, $pId = 1, $pType = '', $pTarget = '', $pTargetMode = '')
 	{
@@ -411,7 +411,7 @@ class PHPExcel_Writer_Excel2007_Rels extends PHPExcel_Writer_Excel2007_WriterPar
 
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Reader_Exception("Invalid parameters passed.");
 		}
 	}
 }
diff --git a/Classes/PHPExcel/Writer/Excel2007/StringTable.php b/Classes/PHPExcel/Writer/Excel2007/StringTable.php
index ee77be4f..ade877cb 100644
--- a/Classes/PHPExcel/Writer/Excel2007/StringTable.php
+++ b/Classes/PHPExcel/Writer/Excel2007/StringTable.php
@@ -41,7 +41,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 	 * @param 	PHPExcel_Worksheet 	$pSheet				Worksheet
 	 * @param 	string[] 				$pExistingTable 	Existing table to eventually merge with
 	 * @return 	string[] 				String table for worksheet
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function createStringTable($pSheet = null, $pExistingTable = null)
 	{
@@ -81,7 +81,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 	        // Return
 	        return $aStringTable;
 		} else {
-			throw new Exception("Invalid PHPExcel_Worksheet object passed.");
+			throw new PHPExcel_Reader_Exception("Invalid PHPExcel_Worksheet object passed.");
 		}
 	}
 
@@ -90,7 +90,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 	 *
 	 * @param 	string[] 	$pStringTable
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeStringTable($pStringTable = null)
 	{
@@ -135,7 +135,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 			// Return
 			return $objWriter->getData();
 		} else {
-			throw new Exception("Invalid string table array passed.");
+			throw new PHPExcel_Reader_Exception("Invalid string table array passed.");
 		}
 	}
 
@@ -145,7 +145,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_RichText			$pRichText		Rich text
 	 * @param 	string						$prefix			Optional Namespace prefix
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeRichText(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_RichText $pRichText = null, $prefix=NULL)
 	{
@@ -227,7 +227,7 @@ class PHPExcel_Writer_Excel2007_StringTable extends PHPExcel_Writer_Excel2007_Wr
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	string|PHPExcel_RichText	$pRichText		text string or Rich text
 	 * @param 	string						$prefix			Optional Namespace prefix
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeRichTextForCharts(PHPExcel_Shared_XMLWriter $objWriter = null, $pRichText = null, $prefix=NULL)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Style.php b/Classes/PHPExcel/Writer/Excel2007/Style.php
index b980a167..9740b760 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Style.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Style.php
@@ -40,7 +40,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeStyles(PHPExcel $pPHPExcel = null)
 	{
@@ -170,7 +170,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_Fill			$pFill			Fill style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeFill(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_Fill $pFill = null)
 	{
@@ -190,7 +190,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_Fill			$pFill			Fill style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeGradientFill(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_Fill $pFill = null)
 	{
@@ -234,7 +234,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter			$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_Fill					$pFill			Fill style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writePatternFill(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_Fill $pFill = null)
 	{
@@ -272,7 +272,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_Font				$pFont			Font style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeFont(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_Font $pFont = null)
 	{
@@ -352,7 +352,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter			$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_Borders				$pBorders		Borders style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeBorder(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_Borders $pBorders = null)
 	{
@@ -389,7 +389,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	PHPExcel_Shared_XMLWriter			$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style						$pStyle			Style
 	 * @param 	PHPExcel							$pPHPExcel		Workbook
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeCellStyleXf(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style $pStyle = null, PHPExcel $pPHPExcel = null)
 	{
@@ -458,7 +458,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 		$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style					$pStyle			Style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeCellStyleDxf(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style $pStyle = null)
 	{
@@ -524,7 +524,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	PHPExcel_Shared_XMLWriter		$objWriter 		XML Writer
 	 * @param 	string							$pName			Element name
 	 * @param 	PHPExcel_Style_Border			$pBorder		Border style
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeBorderPr(PHPExcel_Shared_XMLWriter $objWriter = null, $pName = 'left', PHPExcel_Style_Border $pBorder = null)
 	{
@@ -548,7 +548,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	PHPExcel_Shared_XMLWriter			$objWriter 		XML Writer
 	 * @param 	PHPExcel_Style_NumberFormat			$pNumberFormat	Number Format
 	 * @param 	int									$pId			Number Format identifier
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeNumFmt(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Style_NumberFormat $pNumberFormat = null, $pId = 0)
 	{
@@ -569,7 +569,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel				$pPHPExcel
 	 * @return 	PHPExcel_Style[]		All styles in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allStyles(PHPExcel $pPHPExcel = null)
 	{
@@ -583,7 +583,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel							$pPHPExcel
 	 * @return 	PHPExcel_Style_Conditional[]		All conditional styles in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allConditionalStyles(PHPExcel $pPHPExcel = null)
 	{
@@ -607,7 +607,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel						$pPHPExcel
 	 * @return 	PHPExcel_Style_Fill[]		All fills in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allFills(PHPExcel $pPHPExcel = null)
 	{
@@ -638,7 +638,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel						$pPHPExcel
 	 * @return 	PHPExcel_Style_Font[]		All fonts in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allFonts(PHPExcel $pPHPExcel = null)
 	{
@@ -660,7 +660,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel						$pPHPExcel
 	 * @return 	PHPExcel_Style_Borders[]		All borders in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allBorders(PHPExcel $pPHPExcel = null)
 	{
@@ -682,7 +682,7 @@ class PHPExcel_Writer_Excel2007_Style extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel								$pPHPExcel
 	 * @return 	PHPExcel_Style_NumberFormat[]		All number formats in PHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function allNumberFormats(PHPExcel $pPHPExcel = null)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Theme.php b/Classes/PHPExcel/Writer/Excel2007/Theme.php
index 2ebdf575..d408b2f2 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Theme.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Theme.php
@@ -134,7 +134,7 @@ class PHPExcel_Writer_Excel2007_Theme extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function writeTheme(PHPExcel $pPHPExcel = null)
 	{
@@ -820,7 +820,7 @@ class PHPExcel_Writer_Excel2007_Theme extends PHPExcel_Writer_Excel2007_WriterPa
 	 * @param 	string						$latinFont
 	 * @param 	array of string				$fontSet
 	 * @return 	string 						XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	private function _writeFonts($objWriter, $latinFont, $fontSet)
 	{
@@ -853,7 +853,7 @@ class PHPExcel_Writer_Excel2007_Theme extends PHPExcel_Writer_Excel2007_WriterPa
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter
 	 * @return 	string 						XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	private function _writeColourScheme($objWriter)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Workbook.php b/Classes/PHPExcel/Writer/Excel2007/Workbook.php
index eefe7f10..87ad0596 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Workbook.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Workbook.php
@@ -41,7 +41,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	PHPExcel	$pPHPExcel
 	 * @param	boolean		$recalcRequired	Indicate whether formulas should be recalculated before writing
 	 * @return 	string 		XML Output
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function writeWorkbook(PHPExcel $pPHPExcel = null, $recalcRequired = FALSE)
 	{
@@ -95,7 +95,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * Write file version
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter $objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeFileVersion(PHPExcel_Shared_XMLWriter $objWriter = null)
 	{
@@ -111,7 +111,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * Write WorkbookPr
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter $objWriter 		XML Writer
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeWorkbookPr(PHPExcel_Shared_XMLWriter $objWriter = null)
 	{
@@ -131,7 +131,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel					$pPHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeBookViews(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel $pPHPExcel = null)
 	{
@@ -161,7 +161,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel					$pPHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeWorkbookProtection(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel $pPHPExcel = null)
 	{
@@ -188,7 +188,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter		XML Writer
 	 * @param	boolean						$recalcRequired	Indicate whether formulas should be recalculated before writing
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeCalcPr(PHPExcel_Shared_XMLWriter $objWriter = null, $recalcRequired = TRUE)
 	{
@@ -207,7 +207,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter 	$objWriter 		XML Writer
 	 * @param 	PHPExcel					$pPHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheets(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel $pPHPExcel = null)
 	{
@@ -236,7 +236,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	int							$pSheetId	 		Sheet id
 	 * @param 	int							$pRelId				Relationship ID
 	 * @param   string                      $sheetState         Sheet state (visible, hidden, veryHidden)
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheet(PHPExcel_Shared_XMLWriter $objWriter = null, $pSheetname = '', $pSheetId = 1, $pRelId = 1, $sheetState = 'visible')
 	{
@@ -251,7 +251,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 			$objWriter->writeAttribute('r:id', 		'rId' . $pRelId);
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Reader_Exception("Invalid parameters passed.");
 		}
 	}
 
@@ -260,7 +260,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel					$pPHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDefinedNames(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel $pPHPExcel = null)
 	{
@@ -294,7 +294,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel					$pPHPExcel
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeNamedRanges(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel $pPHPExcel)
 	{
@@ -310,7 +310,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 *
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_NamedRange			$pNamedRange
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDefinedNameForNamedRange(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_NamedRange $pNamedRange)
 	{
@@ -342,7 +342,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Worksheet			$pSheet
 	 * @param 	int							$pSheetId
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDefinedNameForAutofilter(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pSheetId = 0)
 	{
@@ -378,7 +378,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Worksheet			$pSheet
 	 * @param 	int							$pSheetId
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDefinedNameForPrintTitles(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pSheetId = 0)
 	{
@@ -421,7 +421,7 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 	 * @param 	PHPExcel_Shared_XMLWriter	$objWriter 		XML Writer
 	 * @param 	PHPExcel_Worksheet			$pSheet
 	 * @param 	int							$pSheetId
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	private function _writeDefinedNameForPrintArea(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pSheetId = 0)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/Worksheet.php b/Classes/PHPExcel/Writer/Excel2007/Worksheet.php
index 0ea07d20..37ae3fc8 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Worksheet.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Worksheet.php
@@ -42,7 +42,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 * @param	string[]				$pStringTable
 	 * @param	boolean					$includeCharts	Flag indicating if we should write charts
 	 * @return	string					XML Output
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	public function writeWorksheet($pSheet = null, $pStringTable = null, $includeCharts = FALSE)
 	{
@@ -132,7 +132,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 			// Return
 			return $objWriter->getData();
 		} else {
-			throw new Exception("Invalid PHPExcel_Worksheet object passed.");
+			throw new PHPExcel_Reader_Exception("Invalid PHPExcel_Worksheet object passed.");
 		}
 	}
 
@@ -141,7 +141,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheetPr(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -182,7 +182,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter	$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet			$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeDimension(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -197,7 +197,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheetViews(PHPExcel_Shared_XMLWriter $objWriter = NULL, PHPExcel_Worksheet $pSheet = NULL)
 	{
@@ -304,7 +304,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter $objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet		  $pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheetFormatPr(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -356,7 +356,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeCols(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -421,7 +421,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheetProtection(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -456,7 +456,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeConditionalFormatting(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -531,7 +531,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeDataValidations(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -597,7 +597,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeHyperlinks(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -638,7 +638,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeProtectedRanges(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -667,7 +667,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeMergeCells(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -692,7 +692,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writePrintOptions(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -718,7 +718,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter				$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet						$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writePageMargins(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -738,7 +738,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter				$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet						$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeAutoFilter(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -830,7 +830,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter			$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet					$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writePageSetup(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -865,7 +865,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeHeaderFooter(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -890,7 +890,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeBreaks(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -948,7 +948,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
 	 * @param	string[]						$pStringTable	String table
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeSheetData(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pStringTable = null)
 	{
@@ -1033,7 +1033,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Reader_Exception("Invalid parameters passed.");
 		}
 	}
 
@@ -1045,7 +1045,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 * @param	PHPExcel_Cell				$pCellAddress			Cell Address
 	 * @param	string[]					$pStringTable			String table
 	 * @param	string[]					$pFlippedStringTable	String table (flipped), for faster index searching
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeCell(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $pCellAddress = null, $pStringTable = null, $pFlippedStringTable = null)
 	{
@@ -1157,7 +1157,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 
 			$objWriter->endElement();
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Reader_Exception("Invalid parameters passed.");
 		}
 	}
 
@@ -1167,7 +1167,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 * @param	PHPExcel_Shared_XMLWriter	$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet			$pSheet			Worksheet
 	 * @param	boolean						$includeCharts	Flag indicating if we should include drawing details for charts
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeDrawings(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null, $includeCharts = FALSE)
 	{
@@ -1186,7 +1186,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeLegacyDrawing(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
@@ -1203,7 +1203,7 @@ class PHPExcel_Writer_Excel2007_Worksheet extends PHPExcel_Writer_Excel2007_Writ
 	 *
 	 * @param	PHPExcel_Shared_XMLWriter		$objWriter		XML Writer
 	 * @param	PHPExcel_Worksheet				$pSheet			Worksheet
-	 * @throws	Exception
+	 * @throws	PHPExcel_Reader_Exception
 	 */
 	private function _writeLegacyDrawingHF(PHPExcel_Shared_XMLWriter $objWriter = null, PHPExcel_Worksheet $pSheet = null)
 	{
diff --git a/Classes/PHPExcel/Writer/Excel2007/WriterPart.php b/Classes/PHPExcel/Writer/Excel2007/WriterPart.php
index 20c375a1..338d07e7 100644
--- a/Classes/PHPExcel/Writer/Excel2007/WriterPart.php
+++ b/Classes/PHPExcel/Writer/Excel2007/WriterPart.php
@@ -46,7 +46,7 @@ abstract class PHPExcel_Writer_Excel2007_WriterPart
 	 * Set parent IWriter object
 	 *
 	 * @param PHPExcel_Writer_IWriter	$pWriter
-	 * @throws Exception
+	 * @throws PHPExcel_Reader_Exception
 	 */
 	public function setParentWriter(PHPExcel_Writer_IWriter $pWriter = null) {
 		$this->_parentWriter = $pWriter;
@@ -56,13 +56,13 @@ abstract class PHPExcel_Writer_Excel2007_WriterPart
 	 * Get parent IWriter object
 	 *
 	 * @return PHPExcel_Writer_IWriter
-	 * @throws Exception
+	 * @throws PHPExcel_Reader_Exception
 	 */
 	public function getParentWriter() {
 		if (!is_null($this->_parentWriter)) {
 			return $this->_parentWriter;
 		} else {
-			throw new Exception("No parent PHPExcel_Writer_IWriter assigned.");
+			throw new PHPExcel_Reader_Exception("No parent PHPExcel_Writer_IWriter assigned.");
 		}
 	}
 
@@ -70,7 +70,7 @@ abstract class PHPExcel_Writer_Excel2007_WriterPart
 	 * Set parent IWriter object
 	 *
 	 * @param PHPExcel_Writer_IWriter	$pWriter
-	 * @throws Exception
+	 * @throws PHPExcel_Reader_Exception
 	 */
 	public function __construct(PHPExcel_Writer_IWriter $pWriter = null) {
 		if (!is_null($pWriter)) {
diff --git a/Classes/PHPExcel/Writer/Excel5.php b/Classes/PHPExcel/Writer/Excel5.php
index c2f78cc6..609df7be 100644
--- a/Classes/PHPExcel/Writer/Excel5.php
+++ b/Classes/PHPExcel/Writer/Excel5.php
@@ -120,7 +120,7 @@ class PHPExcel_Writer_Excel5 implements PHPExcel_Writer_IWriter
 	 * Save PHPExcel to file
 	 *
 	 * @param	string		$pFilename
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	public function save($pFilename = null) {
 
@@ -241,7 +241,7 @@ class PHPExcel_Writer_Excel5 implements PHPExcel_Writer_IWriter
 	 *
 	 * @deprecated
 	 * @param	string	$pValue		Temporary storage directory
-	 * @throws	Exception	Exception when directory does not exist
+	 * @throws	PHPExcel_Writer_Exception	Exception when directory does not exist
 	 * @return PHPExcel_Writer_Excel5
 	 */
 	public function setTempDir($pValue = '') {
diff --git a/Classes/PHPExcel/Writer/Excel5/BIFFwriter.php b/Classes/PHPExcel/Writer/Excel5/BIFFwriter.php
index 33206082..77765219 100644
--- a/Classes/PHPExcel/Writer/Excel5/BIFFwriter.php
+++ b/Classes/PHPExcel/Writer/Excel5/BIFFwriter.php
@@ -122,7 +122,7 @@ class PHPExcel_Writer_Excel5_BIFFwriter
 				$byte_order = 1;    // Big Endian
 			} else {
 				// Give up. I'll fix this in a later version.
-				throw new Exception("Required floating point format not supported on this platform.");
+				throw new PHPExcel_Reader_Exception("Required floating point format not supported on this platform.");
 			}
 			self::$_byte_order = $byte_order;
 		}
diff --git a/Classes/PHPExcel/Writer/Excel5/Parser.php b/Classes/PHPExcel/Writer/Excel5/Parser.php
index baf74082..4db7a87a 100644
--- a/Classes/PHPExcel/Writer/Excel5/Parser.php
+++ b/Classes/PHPExcel/Writer/Excel5/Parser.php
@@ -564,7 +564,7 @@ class PHPExcel_Writer_Excel5_Parser
 		}
 
 		// TODO: use real error codes
-		throw new Exception("Unknown token $token");
+		throw new PHPExcel_Reader_Exception("Unknown token $token");
 	}
 
 	/**
@@ -598,7 +598,7 @@ class PHPExcel_Writer_Excel5_Parser
 		// chop away beggining and ending quotes
 		$string = substr($string, 1, strlen($string) - 2);
 		if (strlen($string) > 255) {
-			throw new Exception("String is too long");
+			throw new PHPExcel_Reader_Exception("String is too long");
 		}
 
 		return pack('C', $this->ptg['ptgStr']) . PHPExcel_Shared_String::UTF8toBIFF8UnicodeShort($string);
@@ -644,7 +644,7 @@ class PHPExcel_Writer_Excel5_Parser
 			list($cell1, $cell2) = explode(':', $range);
 		} else {
 			// TODO: use real error codes
-			throw new Exception("Unknown range separator");
+			throw new PHPExcel_Reader_Exception("Unknown range separator");
 		}
 
 		// Convert the cell references
@@ -660,7 +660,7 @@ class PHPExcel_Writer_Excel5_Parser
 			$ptgArea = pack("C", $this->ptg['ptgAreaA']);
 		} else {
 			// TODO: use real error codes
-			throw new Exception("Unknown class $class");
+			throw new PHPExcel_Reader_Exception("Unknown class $class");
 		}
 		return $ptgArea . $row1 . $row2 . $col1. $col2;
 	}
@@ -702,7 +702,7 @@ class PHPExcel_Writer_Excel5_Parser
 //		} elseif ($class == 2) {
 //			$ptgArea = pack("C", $this->ptg['ptgArea3dA']);
 //		} else {
-//			throw new Exception("Unknown class $class");
+//			throw new PHPExcel_Reader_Exception("Unknown class $class");
 //		}
 
 		return $ptgArea . $ext_ref . $row1 . $row2 . $col1. $col2;
@@ -732,7 +732,7 @@ class PHPExcel_Writer_Excel5_Parser
 			$ptgRef = pack("C", $this->ptg['ptgRefA']);
 //		} else {
 //			// TODO: use real error codes
-//			throw new Exception("Unknown class $class");
+//			throw new PHPExcel_Reader_Exception("Unknown class $class");
 //		}
 		return $ptgRef.$row.$col;
 	}
@@ -766,7 +766,7 @@ class PHPExcel_Writer_Excel5_Parser
 //		} elseif ($class == 2) {
 			$ptgRef = pack("C", $this->ptg['ptgRef3dA']);
 //		} else {
-//			throw new Exception("Unknown class $class");
+//			throw new PHPExcel_Reader_Exception("Unknown class $class");
 //		}
 
 		return $ptgRef . $ext_ref. $row . $col;
@@ -812,11 +812,11 @@ class PHPExcel_Writer_Excel5_Parser
 
 			$sheet1 = $this->_getSheetIndex($sheet_name1);
 			if ($sheet1 == -1) {
-				throw new Exception("Unknown sheet name $sheet_name1 in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $sheet_name1 in formula");
 			}
 			$sheet2 = $this->_getSheetIndex($sheet_name2);
 			if ($sheet2 == -1) {
-				throw new Exception("Unknown sheet name $sheet_name2 in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $sheet_name2 in formula");
 			}
 
 			// Reverse max and min sheet numbers if necessary
@@ -826,7 +826,7 @@ class PHPExcel_Writer_Excel5_Parser
 		} else { // Single sheet name only.
 			$sheet1 = $this->_getSheetIndex($ext_ref);
 			if ($sheet1 == -1) {
-				throw new Exception("Unknown sheet name $ext_ref in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $ext_ref in formula");
 			}
 			$sheet2 = $sheet1;
 		}
@@ -858,11 +858,11 @@ class PHPExcel_Writer_Excel5_Parser
 
 			$sheet1 = $this->_getSheetIndex($sheet_name1);
 			if ($sheet1 == -1) {
-				throw new Exception("Unknown sheet name $sheet_name1 in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $sheet_name1 in formula");
 			}
 			$sheet2 = $this->_getSheetIndex($sheet_name2);
 			if ($sheet2 == -1) {
-				throw new Exception("Unknown sheet name $sheet_name2 in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $sheet_name2 in formula");
 			}
 
 			// Reverse max and min sheet numbers if necessary
@@ -872,7 +872,7 @@ class PHPExcel_Writer_Excel5_Parser
 		} else { // Single sheet name only.
 			$sheet1 = $this->_getSheetIndex($ext_ref);
 			if ($sheet1 == -1) {
-				throw new Exception("Unknown sheet name $ext_ref in formula");
+				throw new PHPExcel_Reader_Exception("Unknown sheet name $ext_ref in formula");
 			}
 			$sheet2 = $sheet1;
 		}
@@ -942,10 +942,10 @@ class PHPExcel_Writer_Excel5_Parser
 		$cell = strtoupper($cell);
 		list($row, $col, $row_rel, $col_rel) = $this->_cellToRowcol($cell);
 		if ($col >= 256) {
-			throw new Exception("Column in: $cell greater than 255");
+			throw new PHPExcel_Reader_Exception("Column in: $cell greater than 255");
 		}
 		if ($row >= 65536) {
-			throw new Exception("Row in: $cell greater than 65536 ");
+			throw new PHPExcel_Reader_Exception("Row in: $cell greater than 65536 ");
 		}
 
 		// Set the high bits to indicate if row or col are relative.
@@ -983,7 +983,7 @@ class PHPExcel_Writer_Excel5_Parser
 
 		// FIXME: this changes for BIFF8
 		if (($row1 >= 65536) or ($row2 >= 65536)) {
-			throw new Exception("Row in: $range greater than 65536 ");
+			throw new PHPExcel_Reader_Exception("Row in: $range greater than 65536 ");
 		}
 
 		// Set the high bits to indicate if rows are relative.
@@ -1372,7 +1372,7 @@ class PHPExcel_Writer_Excel5_Parser
 			$this->_advance();         // eat the "("
 			$result = $this->_parenthesizedExpression();
 			if ($this->_current_token != ")") {
-				throw new Exception("')' token expected.");
+				throw new PHPExcel_Reader_Exception("')' token expected.");
 			}
 			$this->_advance();         // eat the ")"
 			return $result;
@@ -1442,7 +1442,7 @@ class PHPExcel_Writer_Excel5_Parser
 			$result = $this->_func();
 			return $result;
 		}
-		throw new Exception("Syntax error: ".$this->_current_token.
+		throw new PHPExcel_Reader_Exception("Syntax error: ".$this->_current_token.
 								 ", lookahead: ".$this->_lookahead.
 								 ", current char: ".$this->_current_char);
 	}
@@ -1469,7 +1469,7 @@ class PHPExcel_Writer_Excel5_Parser
 				{
 					$this->_advance();  // eat the "," or ";"
 				} else {
-					throw new Exception("Syntax error: comma expected in ".
+					throw new PHPExcel_Reader_Exception("Syntax error: comma expected in ".
 									  "function $function, arg #{$num_args}");
 				}
 				$result2 = $this->_condition();
@@ -1481,12 +1481,12 @@ class PHPExcel_Writer_Excel5_Parser
 			++$num_args;
 		}
 		if (!isset($this->_functions[$function])) {
-			throw new Exception("Function $function() doesn't exist");
+			throw new PHPExcel_Reader_Exception("Function $function() doesn't exist");
 		}
 		$args = $this->_functions[$function][1];
 		// If fixed number of args eg. TIME($i,$j,$k). Check that the number of args is valid.
 		if (($args >= 0) and ($args != $num_args)) {
-			throw new Exception("Incorrect number of arguments in function $function() ");
+			throw new PHPExcel_Reader_Exception("Incorrect number of arguments in function $function() ");
 		}
 
 		$result = $this->_createTree($function, $result, $num_args);
diff --git a/Classes/PHPExcel/Writer/Excel5/Worksheet.php b/Classes/PHPExcel/Writer/Excel5/Worksheet.php
index d6d6c214..f9ae28a5 100644
--- a/Classes/PHPExcel/Writer/Excel5/Worksheet.php
+++ b/Classes/PHPExcel/Writer/Excel5/Worksheet.php
@@ -2579,7 +2579,7 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 		// Open file.
 		$bmp_fd = @fopen($bitmap,"rb");
 		if (!$bmp_fd) {
-			throw new Exception("Couldn't import $bitmap");
+			throw new PHPExcel_Reader_Exception("Couldn't import $bitmap");
 		}
 
 		// Slurp the file into a string.
@@ -2587,13 +2587,13 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 
 		// Check that the file is big enough to be a bitmap.
 		if (strlen($data) <= 0x36) {
-			throw new Exception("$bitmap doesn't contain enough data.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap doesn't contain enough data.\n");
 		}
 
 		// The first 2 bytes are used to identify the bitmap.
 		$identity = unpack("A2ident", $data);
 		if ($identity['ident'] != "BM") {
-			throw new Exception("$bitmap doesn't appear to be a valid bitmap image.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap doesn't appear to be a valid bitmap image.\n");
 		}
 
 		// Remove bitmap data: ID.
@@ -2617,20 +2617,20 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 		$height = $width_and_height[2];
 		$data   = substr($data, 8);
 		if ($width > 0xFFFF) {
-			throw new Exception("$bitmap: largest image width supported is 65k.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap: largest image width supported is 65k.\n");
 		}
 		if ($height > 0xFFFF) {
-			throw new Exception("$bitmap: largest image height supported is 65k.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap: largest image height supported is 65k.\n");
 		}
 
 		// Read and remove the bitmap planes and bpp data. Verify them.
 		$planes_and_bitcount = unpack("v2", substr($data, 0, 4));
 		$data = substr($data, 4);
 		if ($planes_and_bitcount[2] != 24) { // Bitcount
-			throw new Exception("$bitmap isn't a 24bit true color bitmap.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap isn't a 24bit true color bitmap.\n");
 		}
 		if ($planes_and_bitcount[1] != 1) {
-			throw new Exception("$bitmap: only 1 plane supported in bitmap image.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap: only 1 plane supported in bitmap image.\n");
 		}
 
 		// Read and remove the bitmap compression. Verify compression.
@@ -2639,7 +2639,7 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 
 		//$compression = 0;
 		if ($compression['comp'] != 0) {
-			throw new Exception("$bitmap: compression not supported in bitmap image.\n");
+			throw new PHPExcel_Reader_Exception("$bitmap: compression not supported in bitmap image.\n");
 		}
 
 		// Remove bitmap data: data size, hres, vres, colours, imp. colours.
@@ -2895,7 +2895,7 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 					$formula1 = $this->_parser->toReversePolish();
 					$sz1 = strlen($formula1);
 
-				} catch(Exception $e) {
+				} catch(PHPExcel_Reader_Exception $e) {
 					$sz1 = 0;
 					$formula1 = '';
 				}
@@ -2906,13 +2906,13 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 				try {
 					$formula2 = $dataValidation->getFormula2();
 					if ($formula2 === '') {
-						throw new Exception('No formula2');
+						throw new PHPExcel_Reader_Exception('No formula2');
 					}
 					$this->_parser->parse($formula2);
 					$formula2 = $this->_parser->toReversePolish();
 					$sz2 = strlen($formula2);
 
-				} catch(Exception $e) {
+				} catch(PHPExcel_Reader_Exception $e) {
 					$sz2 = 0;
 					$formula2 = '';
 				}
diff --git a/Classes/PHPExcel/Writer/Exception.php b/Classes/PHPExcel/Writer/Exception.php
new file mode 100644
index 00000000..d50bf292
--- /dev/null
+++ b/Classes/PHPExcel/Writer/Exception.php
@@ -0,0 +1,52 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2012 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Reader
+ * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Writer_Exception
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Reader
+ * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Writer_Exception extends Exception {
+	/**
+	 * Error handler callback
+	 *
+	 * @param mixed $code
+	 * @param mixed $string
+	 * @param mixed $file
+	 * @param mixed $line
+	 * @param mixed $context
+	 */
+	public static function errorHandlerCallback($code, $string, $file, $line, $context) {
+		$e = new self($string, $code);
+		$e->line = $line;
+		$e->file = $file;
+		throw $e;
+	}
+}
diff --git a/Classes/PHPExcel/Writer/HTML.php b/Classes/PHPExcel/Writer/HTML.php
index 52af1727..15aedc06 100644
--- a/Classes/PHPExcel/Writer/HTML.php
+++ b/Classes/PHPExcel/Writer/HTML.php
@@ -146,7 +146,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 * Save PHPExcel to file
 	 *
 	 * @param	string		$pFilename
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	public function save($pFilename = null) {
 		// garbage collect
@@ -163,7 +163,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 		// Open file
 		$fileHandle = fopen($pFilename, 'wb+');
 		if ($fileHandle === false) {
-			throw new Exception("Could not open file $pFilename for writing.");
+			throw new PHPExcel_Writer_Exception("Could not open file $pFilename for writing.");
 		}
 
 		// Write headers
@@ -300,12 +300,12 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 *
 	 * @param	boolean		$pIncludeStyles		Include styles?
 	 * @return	string
-	 * @throws Exception
+	 * @throws PHPExcel_Writer_Exception
 	 */
 	public function generateHTMLHeader($pIncludeStyles = false) {
 		// PHPExcel object known?
 		if (is_null($this->_phpExcel)) {
-			throw new Exception('Internal PHPExcel object not set to an instance of an object.');
+			throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
 		}
 
 		// Construct HTML
@@ -351,12 +351,12 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 * Generate sheet data
 	 *
 	 * @return	string
-	 * @throws Exception
+	 * @throws PHPExcel_Writer_Exception
 	 */
 	public function generateSheetData() {
 		// PHPExcel object known?
 		if (is_null($this->_phpExcel)) {
-			throw new Exception('Internal PHPExcel object not set to an instance of an object.');
+			throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
 		}
 
 		// Ensure that Spans have been calculated?
@@ -470,13 +470,13 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 * Generate sheet tabs
 	 *
 	 * @return	string
-	 * @throws Exception
+	 * @throws PHPExcel_Writer_Exception
 	 */
 	public function generateNavigation()
 	{
 		// PHPExcel object known?
 		if (is_null($this->_phpExcel)) {
-			throw new Exception('Internal PHPExcel object not set to an instance of an object.');
+			throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
 		}
 
 		// Fetch sheets
@@ -514,7 +514,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 * @param	PHPExcel_Worksheet	$pSheet			PHPExcel_Worksheet
 	 * @param	string				$coordinates	Cell coordinates
 	 * @return	string
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	private function _writeImageTagInCell(PHPExcel_Worksheet $pSheet, $coordinates) {
 		// Construct HTML
@@ -557,12 +557,12 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 *
 	 * @param	boolean	$generateSurroundingHTML	Generate surrounding HTML tags? (<style> and </style>)
 	 * @return	string
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	public function generateStyles($generateSurroundingHTML = true) {
 		// PHPExcel object known?
 		if (is_null($this->_phpExcel)) {
-			throw new Exception('Internal PHPExcel object not set to an instance of an object.');
+			throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
 		}
 
 		// Build CSS
@@ -598,12 +598,12 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 *
 	 * @param	boolean	$generateSurroundingHTML	Generate surrounding HTML style? (html { })
 	 * @return	array
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	public function buildCSS($generateSurroundingHTML = true) {
 		// PHPExcel object known?
 		if (is_null($this->_phpExcel)) {
-			throw new Exception('Internal PHPExcel object not set to an instance of an object.');
+			throw new PHPExcel_Writer_Exception('Internal PHPExcel object not set to an instance of an object.');
 		}
 
 		// Cached?
@@ -894,7 +894,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 *
 	 * @param	PHPExcel_Worksheet	$pSheet		The worksheet for the table we are writing
 	 * @return	string
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	private function _generateTableHeader($pSheet) {
 		$sheetIndex = $pSheet->getParent()->getIndex($pSheet);
@@ -938,7 +938,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	/**
 	 * Generate table footer
 	 *
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	private function _generateTableFooter() {
 		// Construct HTML
@@ -956,7 +956,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 	 * @param	array				$pValues		Array containing cells in a row
 	 * @param	int					$pRow			Row number (0-based)
 	 * @return	string
-	 * @throws	Exception
+	 * @throws	PHPExcel_Writer_Exception
 	 */
 	private function _generateRow(PHPExcel_Worksheet $pSheet, $pValues = null, $pRow = 0) {
 		if (is_array($pValues)) {
@@ -1172,7 +1172,7 @@ class PHPExcel_Writer_HTML implements PHPExcel_Writer_IWriter {
 			// Return
 			return $html;
 		} else {
-			throw new Exception("Invalid parameters passed.");
+			throw new PHPExcel_Writer_Exception("Invalid parameters passed.");
 		}
 	}
 
diff --git a/Classes/PHPExcel/Writer/IWriter.php b/Classes/PHPExcel/Writer/IWriter.php
index 28ab4198..ac95bb13 100644
--- a/Classes/PHPExcel/Writer/IWriter.php
+++ b/Classes/PHPExcel/Writer/IWriter.php
@@ -39,7 +39,7 @@ interface PHPExcel_Writer_IWriter
 	 * Save PHPExcel to file
 	 *
 	 * @param 	string 		$pFilename
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Writer_Exception
 	 */
 	public function save($pFilename = null);
 }
diff --git a/Classes/PHPExcel/Writer/PDF.php b/Classes/PHPExcel/Writer/PDF.php
index 966364a1..ad418c8f 100644
--- a/Classes/PHPExcel/Writer/PDF.php
+++ b/Classes/PHPExcel/Writer/PDF.php
@@ -41,17 +41,18 @@ class PHPExcel_Writer_PDF {
 	 * Create a new PHPExcel_Writer_PDF
 	 *
 	 * @param 	PHPExcel	$phpExcel	PHPExcel object
+	 * @throws	PHPExcel_Writer_Exception	Exception when directory does not exist
 	 */
 	public function __construct(PHPExcel $phpExcel) {
 
 		$pdfLibraryName = PHPExcel_Settings::getPdfRendererName();
 		if (is_null($pdfLibraryName)) {
-			throw new Exception("PDF Rendering library has not been defined.");
+			throw new PHPExcel_Writer_Exception("PDF Rendering library has not been defined.");
 		}
 
 		$pdfLibraryPath = PHPExcel_Settings::getPdfRendererPath();
 		if (is_null($pdfLibraryName)) {
-			throw new Exception("PDF Rendering library path has not been defined.");
+			throw new PHPExcel_Writer_Exception("PDF Rendering library path has not been defined.");
 		}
 		$includePath = str_replace('\\','/',get_include_path());
 		$rendererPath = str_replace('\\','/',$pdfLibraryPath);
@@ -67,7 +68,7 @@ class PHPExcel_Writer_PDF {
     public function __call($name, $arguments)
     {
         if ($this->_renderer === NULL) {
-			throw new Exception("PDF Renderer has not been defined.");
+			throw new PHPExcel_Writer_Exception("PDF Renderer has not been defined.");
         }
 
         return call_user_func_array(array($this->_renderer,$name),$arguments);
diff --git a/Classes/PHPExcel/Writer/PDF/Core.php b/Classes/PHPExcel/Writer/PDF/Core.php
index f82be0f0..adc449e5 100644
--- a/Classes/PHPExcel/Writer/PDF/Core.php
+++ b/Classes/PHPExcel/Writer/PDF/Core.php
@@ -225,14 +225,14 @@ abstract class PHPExcel_Writer_PDF_Core extends PHPExcel_Writer_HTML {
 	 * Set temporary storage directory
 	 *
 	 * @param 	string	$pValue		Temporary storage directory
-	 * @throws 	Exception	Exception when directory does not exist
+	 * @throws 	PHPExcel_Writer_Exception	Exception when directory does not exist
 	 * @return PHPExcel_Writer_PDF
 	 */
 	public function setTempDir($pValue = '') {
 		if (is_dir($pValue)) {
 			$this->_tempDir = $pValue;
 		} else {
-			throw new Exception("Directory does not exist: $pValue");
+			throw new PHPExcel_Writer_Exception("Directory does not exist: $pValue");
 		}
 		return $this;
 	}
diff --git a/Classes/PHPExcel/Writer/PDF/DomPDF.php b/Classes/PHPExcel/Writer/PDF/DomPDF.php
index 7522b27c..f30508ef 100644
--- a/Classes/PHPExcel/Writer/PDF/DomPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/DomPDF.php
@@ -31,7 +31,7 @@ $pdfRendererClassFile = PHPExcel_Settings::getPdfRendererPath() . '/dompdf_confi
 if (file_exists($pdfRendererClassFile)) {
 	require_once $pdfRendererClassFile;
 } else {
-	throw new Exception('Unable to load PDF Rendering library');
+	throw new PHPExcel_Reader_Exception('Unable to load PDF Rendering library');
 }
 
 /**
@@ -55,7 +55,7 @@ class PHPExcel_Writer_PDF_DomPDF extends PHPExcel_Writer_PDF_Core implements PHP
 	 * Save PHPExcel to file
 	 *
 	 * @param 	string 		$pFileName
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function save($pFilename = null) {
 		// garbage collect
@@ -67,7 +67,7 @@ class PHPExcel_Writer_PDF_DomPDF extends PHPExcel_Writer_PDF_Core implements PHP
 		// Open file
 		$fileHandle = fopen($pFilename, 'w');
 		if ($fileHandle === false) {
-			throw new Exception("Could not open file $pFilename for writing.");
+			throw new PHPExcel_Reader_Exception("Could not open file $pFilename for writing.");
 		}
 
 		// Set PDF
diff --git a/Classes/PHPExcel/Writer/PDF/mPDF.php b/Classes/PHPExcel/Writer/PDF/mPDF.php
index 5ecf609e..2c807d74 100644
--- a/Classes/PHPExcel/Writer/PDF/mPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/mPDF.php
@@ -31,7 +31,7 @@ $pdfRendererClassFile = PHPExcel_Settings::getPdfRendererPath() . '/mpdf.php';
 if (file_exists($pdfRendererClassFile)) {
 	require_once $pdfRendererClassFile;
 } else {
-	throw new Exception('Unable to load PDF Rendering library');
+	throw new PHPExcel_Reader_Exception('Unable to load PDF Rendering library');
 }
 
 /**
@@ -55,7 +55,7 @@ class PHPExcel_Writer_PDF_mPDF extends PHPExcel_Writer_PDF_Core implements PHPEx
 	 * Save PHPExcel to file
 	 *
 	 * @param 	string 		$pFileName
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function save($pFilename = null) {
 		// garbage collect
@@ -67,7 +67,7 @@ class PHPExcel_Writer_PDF_mPDF extends PHPExcel_Writer_PDF_Core implements PHPEx
 		// Open file
 		$fileHandle = fopen($pFilename, 'w');
 		if ($fileHandle === false) {
-			throw new Exception("Could not open file $pFilename for writing.");
+			throw new PHPExcel_Reader_Exception("Could not open file $pFilename for writing.");
 		}
 
 		// Set PDF
@@ -108,8 +108,11 @@ class PHPExcel_Writer_PDF_mPDF extends PHPExcel_Writer_PDF_Core implements PHPEx
 
 		// Create PDF
 		$pdf = new mpdf();
-		$pdf->_setPageSize(strtoupper($paperSize), $orientation);
+		$ortmp = $orientation;
+		$pdf->_setPageSize(strtoupper($paperSize), $ortmp);
         $pdf->DefOrientation = $orientation;
+        $pdf->AddPage($orientation);
+
 		// Document info
 		$pdf->SetTitle($this->_phpExcel->getProperties()->getTitle());
 		$pdf->SetAuthor($this->_phpExcel->getProperties()->getCreator());
diff --git a/Classes/PHPExcel/Writer/PDF/tcPDF.php b/Classes/PHPExcel/Writer/PDF/tcPDF.php
index 08e7ca78..821a8493 100644
--- a/Classes/PHPExcel/Writer/PDF/tcPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/tcPDF.php
@@ -32,7 +32,7 @@ if (file_exists($pdfRendererClassFile)) {
 	$k_path_url = PHPExcel_Settings::getPdfRendererPath();
 	require_once $pdfRendererClassFile;
 } else {
-	throw new Exception('Unable to load PDF Rendering library');
+	throw new PHPExcel_Reader_Exception('Unable to load PDF Rendering library');
 }
 
 /**
@@ -56,7 +56,7 @@ class PHPExcel_Writer_PDF_tcPDF extends PHPExcel_Writer_PDF_Core implements PHPE
 	 * Save PHPExcel to file
 	 *
 	 * @param 	string 		$pFileName
-	 * @throws 	Exception
+	 * @throws 	PHPExcel_Reader_Exception
 	 */
 	public function save($pFilename = null) {
 		// garbage collect
@@ -68,7 +68,7 @@ class PHPExcel_Writer_PDF_tcPDF extends PHPExcel_Writer_PDF_Core implements PHPE
 		// Open file
 		$fileHandle = fopen($pFilename, 'w');
 		if ($fileHandle === false) {
-			throw new Exception("Could not open file $pFilename for writing.");
+			throw new PHPExcel_Reader_Exception("Could not open file $pFilename for writing.");
 		}
 
 		// Set PDF
diff --git a/Examples/02types-xls.php b/Examples/02types-xls.php
index ba84d6a2..8e4f0ab5 100644
--- a/Examples/02types-xls.php
+++ b/Examples/02types-xls.php
@@ -106,6 +106,10 @@ $objPHPExcel->getActiveSheet()->setCellValue('A11', 'Date/Time')
                               ->setCellValue('C11', PHPExcel_Shared_Date::PHPToExcel( $dateTimeNow ));
 $objPHPExcel->getActiveSheet()->getStyle('C11')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_DATETIME);
 
+$objPHPExcel->getActiveSheet()->setCellValue('A12', 'NULL')
+                              ->setCellValue('C12', NULL);
+
+
 $objPHPExcel->getActiveSheet()->getColumnDimension('B')->setAutoSize(true);
 $objPHPExcel->getActiveSheet()->getColumnDimension('C')->setAutoSize(true);
 
diff --git a/Examples/02types.php b/Examples/02types.php
index fcfd6778..76ef427f 100644
--- a/Examples/02types.php
+++ b/Examples/02types.php
@@ -106,7 +106,11 @@ $objPHPExcel->getActiveSheet()->setCellValue('A11', 'Date/Time')
                               ->setCellValue('C11', PHPExcel_Shared_Date::PHPToExcel( $dateTimeNow ));
 $objPHPExcel->getActiveSheet()->getStyle('C11')->getNumberFormat()->setFormatCode(PHPExcel_Style_NumberFormat::FORMAT_DATE_DATETIME);
 
-$objPHPExcel->getActiveSheet()->getColumnDimension('B')->setAutoSize(true);
+$objPHPExcel->getActiveSheet()->setCellValue('A12', 'NULL')
+                              ->setCellValue('C12', NULL);
+
+
+							  $objPHPExcel->getActiveSheet()->getColumnDimension('B')->setAutoSize(true);
 $objPHPExcel->getActiveSheet()->getColumnDimension('C')->setAutoSize(true);
 
 // Rename worksheet
diff --git a/Examples/21pdf.php b/Examples/21pdf.php
index 5cac43c3..2271f5ba 100644
--- a/Examples/21pdf.php
+++ b/Examples/21pdf.php
@@ -43,11 +43,11 @@ require_once '../Classes/PHPExcel/IOFactory.php';
 
 //	Change these values to select the Rendering library that you wish to use
 //		and its directory location on your server
-//$rendererName = PHPExcel_Settings::PDF_RENDERER_MPDF;
-$rendererName = PHPExcel_Settings::PDF_RENDERER_DOMPDF;
+$rendererName = PHPExcel_Settings::PDF_RENDERER_MPDF;
+//$rendererName = PHPExcel_Settings::PDF_RENDERER_DOMPDF;
 //$rendererLibrary = 'tcPDF5.9';
-//$rendererLibrary = 'mPDF5.4';
-$rendererLibrary = 'domPDF0.6.0beta3';
+$rendererLibrary = 'mPDF5.4';
+//$rendererLibrary = 'domPDF0.6.0beta3';
 $rendererLibraryPath = '/php/libraries/PDF/' . $rendererLibrary;
 
 
diff --git a/changelog.txt b/changelog.txt
index 2ba004a6..c790b200 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -26,9 +26,10 @@
 Fixed in develop branch:
 - Bugfix:   (Asker)    Work item 18777 - Error in PHPEXCEL/Calculation.php script on line 2976 (stack pop check)
 - Bugfix:   (MBaker)   Work item 18794 - CSV files without a file extension being identified as HTML
-- Bugfix:   (MBaker)   Work item GH-66 - Wrong check for maximum number of rows in Excel5 Writer
-- General:  (kea)      Improved AdvancedValueBinder for currency
+- Bugfix:   (AndreKR)  Work item GH-66 - Wrong check for maximum number of rows in Excel5 Writer
+- General:  (kea)      Work item GH-69 - Improved AdvancedValueBinder for currency
 - Bugfix:   (techhead) Work item GH-70 - Fixed formula/formatting bug when removing rows
+- Bugfix:   (alexgann) Work item GH-63 - Fix to cellExists for non-existent namedRanges
 
 
 --------------------------------------------------------------------------------