--- a/IDEFrame.py	Tue Jun 27 13:30:48 2017 +0300
+++ b/IDEFrame.py	Tue Jun 27 19:21:09 2017 +0300
@@ -2047,7 +2047,7 @@
                         self.TabsOpened.DeletePage(idx)
                     else:
                         editor.SubscribeAllDataConsumers()
-                elif editor.IsDebugging():
+                elif editor.IsDebugging() and hasattr(editor, 'SubscribeAllDataConsumers'):
                     editor.SubscribeAllDataConsumers()
             self.DebugVariablePanel.SubscribeAllDataConsumers()