diff --git a/Classes/PHPExcel/IOFactory.php b/Classes/PHPExcel/IOFactory.php
index f9607bc..9f2fca4 100644
--- a/Classes/PHPExcel/IOFactory.php
+++ b/Classes/PHPExcel/IOFactory.php
@@ -70,7 +70,6 @@ class PHPExcel_IOFactory
 		'OOCalc',
 		'SYLK',
 		'Gnumeric',
-		'Serialized',
 		'CSV',
 	);
 
diff --git a/Classes/PHPExcel/Reader/Serialized.php b/Classes/PHPExcel/Reader/Serialized.php
deleted file mode 100644
index b15c3aa..0000000
--- a/Classes/PHPExcel/Reader/Serialized.php
+++ /dev/null
@@ -1,124 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2011 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 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/** PHPExcel root directory */
-if (!defined('PHPEXCEL_ROOT')) {
-	/**
-	 * @ignore
-	 */
-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
-}
-
-/**
- * PHPExcel_Reader_Serialized
- *
- * @category   PHPExcel
- * @package    PHPExcel_Reader
- * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Reader_Serialized implements PHPExcel_Reader_IReader
-{
-	/**
-	 * Can the current PHPExcel_Reader_IReader read the file?
-	 *
-	 * @param 	string 		$pFileName
-	 * @return 	boolean
-	 */
-	public function canRead($pFilename)
-	{
-		// Check if file exists
-		if (!file_exists($pFilename)) {
-			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
-		}
-
-		return $this->fileSupportsUnserializePHPExcel($pFilename);
-	}
-
-	/**
-	 * Loads PHPExcel Serialized file
-	 *
-	 * @param 	string 		$pFilename
-	 * @return 	PHPExcel
-	 * @throws 	Exception
-	 */
-	public function load($pFilename)
-	{
-		// Check if file exists
-		if (!file_exists($pFilename)) {
-			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
-		}
-
-		// Unserialize... First make sure the file supports it!
-		if (!$this->fileSupportsUnserializePHPExcel($pFilename)) {
-			throw new Exception("Invalid file format for PHPExcel_Reader_Serialized: " . $pFilename . ".");
-		}
-
-		return $this->_loadSerialized($pFilename);
-	}
-
-	/**
-	 * Load PHPExcel Serialized file
-	 *
-	 * @param 	string 		$pFilename
-	 * @return 	PHPExcel
-	 */
-	private function _loadSerialized($pFilename) {
-		$xmlData = simplexml_load_string(file_get_contents("zip://$pFilename#phpexcel.xml"));
-		$excel = unserialize(base64_decode((string)$xmlData->data));
-
-		// Update media links
-		for ($i = 0; $i < $excel->getSheetCount(); ++$i) {
-			for ($j = 0; $j < $excel->getSheet($i)->getDrawingCollection()->count(); ++$j) {
-				if ($excel->getSheet($i)->getDrawingCollection()->offsetGet($j) instanceof PHPExcl_Worksheet_BaseDrawing) {
-					$imgTemp =& $excel->getSheet($i)->getDrawingCollection()->offsetGet($j);
-					$imgTemp->setPath('zip://' . $pFilename . '#media/' . $imgTemp->getFilename(), false);
-				}
-			}
-		}
-
-		return $excel;
-	}
-
-    /**
-     * Does a file support UnserializePHPExcel ?
-     *
-	 * @param 	string 		$pFilename
-	 * @throws 	Exception
-	 * @return 	boolean
-     */
-    public function fileSupportsUnserializePHPExcel($pFilename = '') {
-		// Check if file exists
-		if (!file_exists($pFilename)) {
-			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
-		}
-
-		// File exists, does it contain phpexcel.xml?
-		return PHPExcel_Shared_File::file_exists("zip://$pFilename#phpexcel.xml");
-    }
-}
diff --git a/Classes/PHPExcel/Writer/Serialized.php b/Classes/PHPExcel/Writer/Serialized.php
deleted file mode 100644
index 0393e67..0000000
--- a/Classes/PHPExcel/Writer/Serialized.php
+++ /dev/null
@@ -1,181 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (c) 2006 - 2011 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_Writer
- * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-
-/**
- * PHPExcel_Writer_Serialized
- *
- * @category   PHPExcel
- * @package    PHPExcel_Writer
- * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- */
-class PHPExcel_Writer_Serialized implements PHPExcel_Writer_IWriter
-{
-	/**
-	 * Private PHPExcel
-	 *
-	 * @var PHPExcel
-	 */
-	private $_spreadSheet;
-
-    /**
-     * Create a new PHPExcel_Writer_Serialized
-     *
-	 * @param 	PHPExcel	$pPHPExcel
-     */
-    public function __construct(PHPExcel $pPHPExcel = null)
-    {
-    	// Assign PHPExcel
-		$this->setPHPExcel($pPHPExcel);
-    }
-
-	/**
-	 * Save PHPExcel to file
-	 *
-	 * @param 	string 		$pFileName
-	 * @throws 	Exception
-	 */
-	public function save($pFilename = null)
-	{
-		if (!is_null($this->_spreadSheet)) {
-			// Garbage collect
-			$this->_spreadSheet->garbageCollect();
-
-			// Garbage collect...
-			foreach ($this->_spreadSheet->getAllSheets() as $sheet) {
-        		$sheet->garbageCollect();
-			}
-
-			// Create new ZIP file and open it for writing
-			$objZip = new ZipArchive();
-
-			// Try opening the ZIP file
-			if ($objZip->open($pFilename, ZIPARCHIVE::OVERWRITE) !== true) {
-				if ($objZip->open($pFilename, ZIPARCHIVE::CREATE) !== true) {
-					throw new Exception("Could not open " . $pFilename . " for writing.");
-				}
-			}
-
-			// Add media
-			$sheetCount = $this->_spreadSheet->getSheetCount();
-			for ($i = 0; $i < $sheetCount; ++$i) {
-				for ($j = 0; $j < $this->_spreadSheet->getSheet($i)->getDrawingCollection()->count(); ++$j) {
-					if ($this->_spreadSheet->getSheet($i)->getDrawingCollection()->offsetGet($j) instanceof PHPExcel_Worksheet_BaseDrawing) {
-						$imgTemp = $this->_spreadSheet->getSheet($i)->getDrawingCollection()->offsetGet($j);
-						$objZip->addFromString('media/' . $imgTemp->getFilename(), file_get_contents($imgTemp->getPath()));
-					}
-				}
-			}
-
-			// Add phpexcel.xml to the document, which represents a PHP serialized PHPExcel object
-			$objZip->addFromString('phpexcel.xml', $this->_writeSerialized($this->_spreadSheet, $pFilename));
-
-			// Close file
-			if ($objZip->close() === false) {
-				throw new Exception("Could not close zip file $pFilename.");
-			}
-		} else {
-			throw new Exception("PHPExcel object unassigned.");
-		}
-	}
-
-	/**
-	 * Get PHPExcel object
-	 *
-	 * @return PHPExcel
-	 * @throws Exception
-	 */
-	public function getPHPExcel() {
-		if (!is_null($this->_spreadSheet)) {
-			return $this->_spreadSheet;
-		} else {
-			throw new Exception("No PHPExcel assigned.");
-		}
-	}
-
-	/**
-	 * Get PHPExcel object
-	 *
-	 * @param 	PHPExcel 	$pPHPExcel	PHPExcel object
-	 * @throws	Exception
-	 * @return PHPExcel_Writer_Serialized
-	 */
-	public function setPHPExcel(PHPExcel $pPHPExcel = null) {
-		$this->_spreadSheet = $pPHPExcel;
-		return $this;
-	}
-
-	/**
-	 * Serialize PHPExcel object to XML
-	 *
-	 * @param 	PHPExcel	$pPHPExcel
-	 * @param 	string		$pFilename
-	 * @return 	string 		XML Output
-	 * @throws 	Exception
-	 */
-	private function _writeSerialized(PHPExcel $pPHPExcel = null, $pFilename = '')
-	{
-		// Clone $pPHPExcel
-		$pPHPExcel = clone $pPHPExcel;
-
-		// Update media links
-		$sheetCount = $pPHPExcel->getSheetCount();
-		for ($i = 0; $i < $sheetCount; ++$i) {
-			for ($j = 0; $j < $pPHPExcel->getSheet($i)->getDrawingCollection()->count(); ++$j) {
-				if ($pPHPExcel->getSheet($i)->getDrawingCollection()->offsetGet($j) instanceof PHPExcel_Worksheet_BaseDrawing) {
-					$imgTemp =& $pPHPExcel->getSheet($i)->getDrawingCollection()->offsetGet($j);
-					$imgTemp->setPath('zip://' . $pFilename . '#media/' . $imgTemp->getFilename(), false);
-				}
-			}
-		}
-
-		// Create XML writer
-		$objWriter = new xmlWriter();
-		$objWriter->openMemory();
-		$objWriter->setIndent(true);
-
-		// XML header
-		$objWriter->startDocument('1.0','UTF-8','yes');
-
-		// PHPExcel
-		$objWriter->startElement('PHPExcel');
-		$objWriter->writeAttribute('version', '##VERSION##');
-
-			// Comment
-			$objWriter->writeComment('This file has been generated using PHPExcel v##VERSION## (http://www.codeplex.com/PHPExcel). It contains a base64 encoded serialized version of the PHPExcel internal object.');
-
-			// Data
-			$objWriter->startElement('data');
-				$objWriter->writeCData( base64_encode(serialize($pPHPExcel)) );
-			$objWriter->endElement();
-
-		$objWriter->endElement();
-
-		// Return
-		return $objWriter->outputMemory(true);
-	}
-}
diff --git a/Documentation/PHPExcel developer documentation.doc b/Documentation/PHPExcel developer documentation.doc
index a364e6e..c28ce4d 100644
Binary files a/Documentation/PHPExcel developer documentation.doc and b/Documentation/PHPExcel developer documentation.doc differ
diff --git a/Tests/12serializedfileformat.php b/Tests/12serializedfileformat.php
deleted file mode 100644
index 19a2297..0000000
--- a/Tests/12serializedfileformat.php
+++ /dev/null
@@ -1,60 +0,0 @@
-<?php
-/**
- * PHPExcel
- *
- * Copyright (C) 2006 - 2011 PHPExcel
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * @category   PHPExcel
- * @package    PHPExcel
- * @copyright  Copyright (c) 2006 - 2011 PHPExcel (http://www.codeplex.com/PHPExcel)
- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
- * @version    ##VERSION##, ##DATE##
- */
-
-/** Error reporting */
-error_reporting(E_ALL);
-
-date_default_timezone_set('Europe/London');
-
-include "05featuredemo.inc.php";
-
-/** PHPExcel_IOFactory */
-require_once '../Classes/PHPExcel/IOFactory.php';
-
-
-// Save PHPExcel Serialized file
-echo date('H:i:s') . " Write to PHPExcel Serialized format\n";
-$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Serialized');
-$objWriter->save(str_replace('.php', '.phpxl', __FILE__));
-
-
-// Read PHPExcel Serialized file
-echo date('H:i:s') . " Read from PHPExcel Serialized format\n";
-$objPHPExcel = PHPExcel_IOFactory::load(str_replace('.php', '.phpxl', __FILE__));
-
-
-// Save Excel 2007 file
-echo date('H:i:s') . " Write to Excel2007 format\n";
-$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
-$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
-
-
-// Echo memory peak usage
-echo date('H:i:s') . " Peak memory usage: " . (memory_get_peak_usage(true) / 1024 / 1024) . " MB\r\n";
-
-// Echo done
-echo date('H:i:s') . " Done writing file.\r\n";
diff --git a/changelog.txt b/changelog.txt
index 02dc760..5bdd44a 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -70,6 +70,7 @@ Fixed in SVN:
 - General:  (MBaker) Improved performance (speed), for building the Shared Strings table in the Excel2007 Writer.
 - General:  (MBaker) Improved performance (speed), for PHP to Excel date conversions
 - General:  (MBaker) Enhanced SheetViews element structures in the Excel2007 Writer for frozen panes.
+- General:  (MBaker) Removed Serialized Reader/Writer as these no longer work.