diff -r 899ca8809528 -r 3cd39bc7dbad graphics/GraphicCommons.py
--- a/graphics/GraphicCommons.py	Thu Dec 06 17:14:03 2012 +0100
+++ b/graphics/GraphicCommons.py	Tue Dec 11 01:17:52 2012 +0100
@@ -352,6 +352,9 @@
         if iec_path is not None:
             self.DataProducer.UnsubscribeDebugIECVariable(iec_path, consumer)
     
+    def RegisterVariables(self):
+        pass
+    
     def GetDataType(self, iec_path):
         if self.DataProducer is not None:
             infos = self.DataProducer.GetInstanceInfos(iec_path)
@@ -2015,6 +2018,7 @@
     def Clone(self, parent, connectors = {}, dx = 0, dy = 0):
         start_connector = connectors.get(self.StartConnected, None)
         end_connector = connectors.get(self.EndConnected, None)
+        print self.StartConnected, "=>", start_connector, ",", self.EndConnected, "=>", end_connector
         if start_connector is not None and end_connector is not None:
             wire = Wire(parent)
             wire.SetPoints([(point.x + dx, point.y + dy) for point in self.Points])