--- a/QTfrontend/drawmapscene.cpp	Mon Sep 30 13:43:55 2013 -0400
+++ b/QTfrontend/drawmapscene.cpp	Mon Sep 30 22:46:48 2013 +0400
@@ -193,6 +193,8 @@
         removeItem(items().first());
     }
 
+    items().clear();
+
     oldPaths = paths;
 
     paths.clear();