diff -r 980863738cf6 -r 8e19df12b596 ConfigTreeNode.py
--- a/ConfigTreeNode.py	Sun Sep 23 18:57:35 2012 +0200
+++ b/ConfigTreeNode.py	Sun Sep 23 23:34:04 2012 +0200
@@ -353,10 +353,12 @@
         # Find a free name, eventually appending digit
         res = DesiredName
         if DesiredName.endswith("_0"):
-            DesiredName = DesiredName[:-2]
+            BaseDesiredName = DesiredName[:-2]
+        else:
+            BaseDesiredName = DesiredName
         suffix = 1
         while res in AllNames:
-            res = "%s_%d"%(DesiredName, suffix)
+            res = "%s_%d"%(BaseDesiredName, suffix)
             suffix += 1
         
         # Get old path