Index: branches/unlabeled/unlabeled-1.38.2/kernel/include/item.php
===================================================================
diff -u -r5341 -r5962
--- branches/unlabeled/unlabeled-1.38.2/kernel/include/item.php	(.../item.php)	(revision 5341)
+++ branches/unlabeled/unlabeled-1.38.2/kernel/include/item.php	(.../item.php)	(revision 5962)
@@ -247,7 +247,9 @@
 	function DeleteCustomData()
 	{
 		$cdata = new clsCustomDataList();
-		$cdata->DeleteResource($this->Get('ResourceId'), $this->Prefix);
+		if ($this->Prefix) {
+			$cdata->DeleteResource($this->Get('ResourceId'), $this->Prefix);
+		}
 	}
 
 	function Delete($RecordOnly=FALSE)