Index: DOM/PM/impl/DataM/DataMBouwsteenCreator.cls.xml
===================================================================
diff -u -r70937 -r72682
--- DOM/PM/impl/DataM/DataMBouwsteenCreator.cls.xml	(.../DataMBouwsteenCreator.cls.xml)	(revision 70937)
+++ DOM/PM/impl/DataM/DataMBouwsteenCreator.cls.xml	(.../DataMBouwsteenCreator.cls.xml)	(revision 72682)
@@ -176,7 +176,10 @@
 <Implementation><![CDATA[
 	Set ..KostSuffix = 1
 	Set ..KostSortNr = 200
-	Do ..KostItem.Accept(##this)
+	
+	If $IsObject(..KostItem) {
+		Do ..KostItem.Accept(##this)
+	}
 ]]></Implementation>
 </Method>