File "/usr/lib/python2.5/site-packages/twisted/spread/pb.py", line 847, in _recvMessage
    netResult = object.remoteMessageReceived(self, message, netArgs, netKw)
  File "/usr/lib/python2.5/site-packages/twisted/spread/flavors.py", line 119, in remoteMessageReceived
    state = method(*args, **kw)
  File "/home/dev/elisa-rewrite/elisa/plugins/base/services/upnp_media_renderer.py", line 88, in remote_play
    self.player_model.state = player.STATES.PLAYING
  File "/home/dev/elisa-rewrite/elisa/core/observers/observable.py", line 34, in __setattr__
    observer.attribute_set(key, value)
  File "/home/dev/elisa-rewrite/elisa/plugins/base/controllers/player_controller.py", line 73, in attribute_set
    self.state_changed(value)
  File "/home/dev/elisa-rewrite/elisa/plugins/base/controllers/player_controller.py", line 101, in state_changed
    dfr = mm.get_media_type(uri)
  File "/home/dev/elisa-rewrite/elisa/core/media_manager.py", line 399, in get_media_type
    return self._proxy('get_media_type', None, uri)
  File "/home/dev/elisa-rewrite/elisa/core/media_manager.py", line 357, in _proxy
    provider = self._get_media_provider(uri)
  File "/home/dev/elisa-rewrite/elisa/core/media_manager.py", line 345, in _get_media_provider
    providers = self._providers_by_scheme.get(uri.scheme)
exceptions.AttributeError: 'NoneType' object has no attribute 'scheme'

>> call player get_readable_state ()