Index: t3lib/class.t3lib_recordlist.php
===================================================================
--- t3lib/class.t3lib_recordlist.php	(revision 7388)
+++ t3lib/class.t3lib_recordlist.php	(working copy)
@@ -353,7 +353,9 @@
 		// setcbValue()
 	function setcbValue(CBname,flag)	{	//
 		CBfullName = "CBC["+CBname+"]";
-		document.dblistForm[CBfullName].checked = flag ? "on" : 0;
+		if(document.dblistForm[CBfullName] && document.dblistForm[CBfullName] != "undefined") {
+			document.dblistForm[CBfullName].checked = flag ? "on" : 0;
+		}
 	}
 
 		';