It looks like an error has occurred - Xubuntu 13.04 AMD64

[Sora Célestinia]

Traceback (most recent call last):
  File "/usr/share/covergloobus/players/generic/Player.py", line 78, in _notify_started
    self.cg.update(STATE, State.STARTED)
  File "/usr/share/covergloobus/core/covergloobus.py", line 365, in update
    callback(*args)
  File "/usr/share/covergloobus/core/observer.py", line 11, in __call__
    self.callback(*args)
  File "/usr/share/covergloobus/core/covergloobus.py", line 308, in update_state
    self.check_song()
  File "/usr/share/covergloobus/core/covergloobus.py", line 273, in check_song
    state = self.player.get_state()
  File "/usr/share/covergloobus/players/generic/Mpris2.py", line 86, in get_state
    status = self._properties.Get('org.mpris.MediaPlayer2.Player', 'PlaybackStatus')
  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)
DBusException: org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)

----
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=13.04
DISTRIB_CODENAME=raring
DISTRIB_DESCRIPTION="ubuntu 13.04"
LINUX_KERNEL=3.8.0-30-generic
PACKAGE="covergloobus"
VERSION="1.7"