$ /usr/bin/jockey-gtk

(jockey-gtk:2282): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion `icon_set != NULL' failed

(jockey-gtk:2282): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion `icon_set != NULL' failed
ERROR:dbus.proxies:Introspect error on :1.44:/DeviceDriver: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Traceback (most recent call last):
  File "/usr/bin/jockey-gtk", line 418, in
    sys.exit(u.run())
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 468, 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 274, in update_tree_model
    for h_id in self.get_displayed_handlers():
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 819, in get_displayed_handlers
    return self.backend().available(self.argv_options.mode)
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 130, in backend
    self._check_repositories()
  File "/usr/lib/python2.7/dist-packages/jockey/ui.py", line 842, in _check_repositories
    if self._dbus_iface.has_repositories():
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.