Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/gi/overrides/GLib.py", line 614, in <lambda>
    return (lambda data: callback(*data), user_data)
  File "/usr/share/software-center/softwarecenter/utils.py", line 187, in <lambda>
    GLib.timeout_add(500, lambda: wrapper(*args, **kwargs))
  File "/usr/share/software-center/softwarecenter/utils.py", line 192, in wrapper
    f(*args, **kwargs)
  File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1291, in show_app
    self.installed_pane.init_view()
  File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/installedpane.py", line 143, in init_view
    self.oneconf_handler = get_oneconf_handler(self.oneconf_viewpickler)
  File "/usr/share/software-center/softwarecenter/backend/oneconfhandler/__init__.py", line 32, in get_oneconf_handler
    oneconf_handler = OneConfHandler(oneconfviewpickler)
  File "/usr/share/software-center/softwarecenter/backend/oneconfhandler/core.py", line 56, in __init__
    self.oneconf = DbusConnect()
  File "/usr/lib/python2.7/dist-packages/oneconf/dbusconnect.py", line 152, in __init__
    HOSTS_OBJECT_NAME)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in start_service_by_name
    'su', (bus_name, flags)))
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program /usr/share/oneconf/oneconf-service: Success