diff -r 69863c4d9c5f svtools/source/uno/treecontrolpeer.cxx
--- a/svtools/source/uno/treecontrolpeer.cxx	Sun Oct 17 20:02:00 2010 +0900
+++ b/svtools/source/uno/treecontrolpeer.cxx	Sun Oct 17 20:07:19 2010 +0900
@@ -1638,7 +1638,7 @@
 
 USHORT UnoTreeListItem::IsA()
 {
-	return 0;
+	return SV_ITEM_ID_LBOXSTRING;
 }
 
 // --------------------------------------------------------------------