diff -r bf3ea1f1520b -r 59614eaf5fbb linkablemapobj.cpp
--- a/linkablemapobj.cpp	Tue Apr 28 20:53:44 2009 +0000
+++ b/linkablemapobj.cpp	Wed Apr 29 18:46:31 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