Traceback (most recent call last):
  File "/usr/bin/jockey-gtk", line 415, in <module>
    sys.exit(u.run())
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 465, in run
    self.ui_show_main()
  File "/usr/bin/jockey-gtk", line 94, in ui_show_main
    self.update_tree_model()
  File "/usr/bin/jockey-gtk", line 271, in update_tree_model
    for h_id in self.get_displayed_handlers():
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 816, in get_displayed_handlers
    return self.backend().available(self.argv_options.mode)
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 127, in backend
    self._check_repositories()
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 839, in _check_repositories
    if self._dbus_iface.has_repositories():
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 143, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.ServiceUnknown: The name :1.54 was not provided by any .service files