Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/AppInstall/AppInstall.py", line 1297, in on_treeview_categories_cursor_changed
    self.refilter(model=item.applications)
  File "/usr/lib/python2.6/dist-packages/AppInstall/AppInstall.py", line 442, in refilter
    self.menu._refilter(model)
  File "/usr/lib/python2.6/dist-packages/AppInstall/Menu.py", line 137, in _refilter
    name = model.get_value(model.get_iter(path), COL_NAME)
ValueError: invalid tree path