Traceback (most recent call last):
  File "/var/lib/python-support/python2.5/gnomecatalog/ui/app.py", line 217, in on_treeviewDisk_cursor_changed
    self.data.show_files_from_selected()
  File "/var/lib/python-support/python2.5/gnomecatalog/data.py", line 101, in show_files_from_selected
    item, iter = self.treeDisk.get_selected()
  File "/var/lib/python-support/python2.5/gnomecatalog/ui/treeviews.py", line 106, in get_selected
    return model[iter][3], iter
TypeError: could not parse subscript as a tree path