Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/apptreeview.py", line 248, in _on_cursor_changed
    self.expand_path(None)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/apptreeview.py", line 130, in expand_path
    model.row_changed(old, model.get_iter(old))
  File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 750, in get_iter
    raise ValueError("invalid tree path '%s'" % path)
ValueError: invalid tree path '5:10'