diff --git a/Classes/PHPExcel/Calculation/Functions.php b/Classes/PHPExcel/Calculation/Functions.php
index 7f6240141..dea1503b8 100644
--- a/Classes/PHPExcel/Calculation/Functions.php
+++ b/Classes/PHPExcel/Calculation/Functions.php
@@ -496,7 +496,7 @@ public static function IS_NONTEXT($value = NULL) {
 	 * @return	string	Version information
 	 */
 	public static function VERSION() {
-		return 'PHPExcel ##VERSION##, ##DATE##';
+		return 'PHPExcel 1.8.1, 2015-04-30';
 	}	//	function VERSION()
 
 
diff --git a/Classes/PHPExcel/Reader/Excel2007.php b/Classes/PHPExcel/Reader/Excel2007.php
index e41596afc..a05241ae0 100644
--- a/Classes/PHPExcel/Reader/Excel2007.php
+++ b/Classes/PHPExcel/Reader/Excel2007.php
@@ -1641,6 +1641,7 @@ public function load($pFilename)
 								$extractedRange = preg_replace('/\'(\w+)\'\!/', '', $extractedRange);
 								if (($spos = strpos($extractedRange,'!')) !== false) {
 									$extractedRange = substr($extractedRange,0,$spos).str_replace('$', '', substr($extractedRange,$spos));
+
 								} else {
 									$extractedRange = str_replace('$', '', $extractedRange);
 								}
@@ -1682,15 +1683,16 @@ public function load($pFilename)
 									$extractedSheetName = '';
 									if (strpos( (string)$definedName, '!' ) !== false) {
 										// Extract sheet name
-										$extractedSheetName = PHPExcel_Worksheet::extractSheetTitle( (string)$definedName, true );
-										$extractedSheetName = $extractedSheetName[0];
+										$extraction = PHPExcel_Worksheet::extractSheetTitle( (string)$definedName, true );
+
+										$extractedSheetName = $extraction[0];
+										$extractedRange = $extraction[1];
 
 										// Locate sheet
 										$locatedSheet = $excel->getSheetByName($extractedSheetName);
 
 										// Modify range
-										$range = explode('!', $extractedRange);
-										$extractedRange = isset($range[1]) ? $range[1] : $range[0];
+										$extractedRange = str_replace('$', '', $extractedRange);
 									}
 
 									if ($locatedSheet !== NULL) {
diff --git a/Classes/PHPExcel/Worksheet.php b/Classes/PHPExcel/Worksheet.php
index 2b0b57ae4..26f871994 100644
--- a/Classes/PHPExcel/Worksheet.php
+++ b/Classes/PHPExcel/Worksheet.php
@@ -2652,14 +2652,18 @@ public function getHashCode() {
      * @return mixed
      */
 	public static function extractSheetTitle($pRange, $returnRange = false) {
+        if (substr($pRange,0, strlen('OFFSET(')) === 'OFFSET(')
+            $pRange = substr($pRange, strlen('OFFSET('));
+
         // Sheet title included?
         if (($sep = strpos($pRange, '!')) === false) {
             return '';
         }
 
         if ($returnRange) {
+            $comma = strpos(substr($pRange, $sep + 1), ',') ?: -1;
             return array( trim(substr($pRange, 0, $sep),"'"),
-                          substr($pRange, $sep + 1)
+                          substr($pRange, $sep + 1, $comma)
                         );
         }
 
diff --git a/Classes/PHPExcel/Worksheet/CellIterator.php b/Classes/PHPExcel/Worksheet/CellIterator.php
index 77c5d2e31..239cb4ff1 100644
--- a/Classes/PHPExcel/Worksheet/CellIterator.php
+++ b/Classes/PHPExcel/Worksheet/CellIterator.php
@@ -79,8 +79,7 @@ public function getIterateOnlyExistingCells() {
 	 *
      * @throws PHPExcel_Exception
 	 */
-    abstract protected function adjustForExistingOnlyRange() {
-    }
+    abstract protected function adjustForExistingOnlyRange();
 
 	/**
 	 * Set the iterator to loop only existing cells