diff -r c6908bc17d78 -r 7a71a914afdb linkablemapobj.cpp
--- a/linkablemapobj.cpp	Mon Apr 27 12:42:06 2009 +0000
+++ b/linkablemapobj.cpp	Thu May 07 08:48:53 2009 +0000
@@ -140,7 +140,7 @@
 void LinkableMapObj::setParObj(LinkableMapObj* o)
 {
     parObj=o;
-	model=parObj->getModel();	
+	if (parObj) model=parObj->getModel();
 }
 
 void LinkableMapObj::setParObjTmp(LinkableMapObj*,QPointF,int)	// FIXME-3 make pure virtual