Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 1171, in on_treeview_packages_cursor_changed
    self.textview_description.show_description(item)
  File "/usr/lib/python2.5/site-packages/AppInstall/widgets/AppDescView.py", line 163, in show_description
    gtk.ICON_SIZE_MENU)
TypeError: GtkImage.set_from_icon_name() argument 1 must be string, not None