Traceback (most recent call last): File "/home/username/.bazaar/plugins/gtk/diff.py", line 391, in _treeview_cursor_cb specific_files = [ self.model[path][1] ] File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 730, in __getitem__ aiter = self.get_iter(key) File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 744, in get_iter path = TreePath(path) File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 1110, in __new__ if len(path) == 0: TypeError: object of type 'NoneType' has no len()