=== modified file 'terminatorlib/terminal.py'
--- terminatorlib/terminal.py	2015-11-07 00:29:12 +0000
+++ terminatorlib/terminal.py	2015-11-28 18:39:57 +0000
@@ -549,8 +549,9 @@
 
         return(menu)
 
-    def position_popup_group_menu(self, menu, widget):
+    def position_popup_group_menu(self, menu, *args):
         """Calculate the position of the group popup menu"""
+        widget = args[-1]
         _screen_w = Gdk.Screen.width()
         screen_h = Gdk.Screen.height()