Traceback (most recent call last):
  File "/usr/bin/jockey-gtk", line 417, in <module>
    sys.exit(u.run())
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 428, in run
    self.ui_show_main()
  File "/usr/bin/jockey-gtk", line 101, in ui_show_main
    self.update_tree_model()
  File "/usr/bin/jockey-gtk", line 277, in update_tree_model
    for h_id in self.get_displayed_handlers():
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 772, in get_displayed_handlers
    return self.backend().available(self.argv_options.mode)
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 110, in backend
    self._check_repositories()
  File "/usr/lib/python2.6/dist-packages/jockey/ui.py", line 795, in _check_repositories
    if self._dbus_iface.has_repositories():
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.6/dist-packages/jockey/backend.py", line 554, in has_repositories
    return OSLib.inst.has_repositories()
  File "/usr/lib/python2.6/dist-packages/jockey/oslib.py", line 319, in has_repositories
    for o in c['dkms'].candidate.origins:
AttributeError: 'NoneType' object has no attribute 'origins'