Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 352, in on_configure_device_clicked
    device.getGfxCardModel().name, 0)
  File "/usr/lib/python2.5/site-packages/displayconfiggtk/DisplayConfig.py", line 315, in _select_in_treeview
    model.foreach(find)
AttributeError: 'NoneType' object has no attribute 'foreach'