Index: Classes/Controller/PreviewController.php
===================================================================
--- Classes/Controller/PreviewController.php	(Revision 10162)
+++ Classes/Controller/PreviewController.php	(Arbeitskopie)
@@ -51,7 +51,7 @@
 			// Load  JavaScript:
 		$this->pageRenderer->addExtDirectCode();
 		$this->pageRenderer->addJsFile(
-			$this->backPath . 'ajax.php?ajaxID=ExtDirect::getAPI&namespace=TYPO3.Workspaces',
+			$this->backPath . 'ajax.php?ajaxID=ExtDirect::getAPI&namespace=TYPO3.Workspaces&' . TYPO3_version,
 			NULL,
 			FALSE
 		);
Index: Classes/Controller/ReviewController.php
===================================================================
--- Classes/Controller/ReviewController.php	(Revision 10162)
+++ Classes/Controller/ReviewController.php	(Arbeitskopie)
@@ -139,7 +139,7 @@
 
 			// Load  JavaScript:
 		$this->pageRenderer->addExtDirectCode();
-		$this->pageRenderer->addJsFile($this->backPath . 'ajax.php?ajaxID=ExtDirect::getAPI&namespace=TYPO3.Workspaces', NULL, FALSE);
+		$this->pageRenderer->addJsFile($this->backPath . 'ajax.php?ajaxID=ExtDirect::getAPI&namespace=TYPO3.Workspaces&' . TYPO3_version, NULL, FALSE);
 
 		$this->pageRenderer->addJsFile($this->backPath . '../t3lib/js/extjs/ux/flashmessages.js');
 		$this->pageRenderer->addJsFile($this->backPath . '../t3lib/js/extjs/ux/Ext.grid.RowExpander.js');