Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/ui/gtk3/widgets/apptreeview.py", line 438, in _cell_data_func_cb
    model.load_range(indices, 5)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/models/appstore2.py", line 422, in load_range
    if self[(i,)][0]: continue
  File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 734, in __getitem__
    raise IndexError("could not find tree path '%s'" % key)
IndexError: could not find tree path '1441'