Index: t3lib/utility/class.t3lib_utility_command.php
===================================================================
--- t3lib/utility/class.t3lib_utility_command.php	(revision 9961)
+++ t3lib/utility/class.t3lib_utility_command.php	(working copy)
@@ -46,11 +46,37 @@
 	 * @return null|array
 	 */
 	public static function exec($command, &$output = NULL, &$returnValue = 0) {
-		$lastLine = exec($command, $output, $returnValue);
+		$prefix = self::prefixCommandLine($command);
+		$lastLine = exec($prefix . $command, $output, $returnValue);
 		return $lastLine;
 	}
 
 	/**
+	 * Builds prefix for command line calls in Windows
+	 *
+	 * When using a call to a command line function in Windows and PHP < 5.3.0 and if there are more than two double quotes in
+	 * the command will simply not work due to a bug in PHP. A workaround is to add a dummy command in front of the actual
+	 * command
+	 *
+	 * @static
+	 * @param string $path Path to command
+	 * @return string Prefix for command
+	 */
+	protected static function prefixCommandLine($path) {
+		$prefixCommand = '';
+		if (TYPO3_OS == 'WIN' && version_compare(phpversion(), '5.3.0') == -1) {
+			if (preg_match('/([a-z]:)/i', $path, $matches)) {
+				// if a drive letter is found, use it
+				$prefixCommand = $matches[1] . ' & ';
+			} else {
+				// fallback is drive c:, which should be present in Windows installations
+				$prefixCommand = 'c: & ';
+			}
+		}
+		return $prefixCommand;
+	}
+
+	/**
 	 * Compile the command for running ImageMagick/GraphicsMagick.
 	 *
 	 * @param	string		Command to be run: identify, convert or combine/composite