Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/butterfly/util/decorator.py", line 87, in async_function
    func(*args, **kwargs)
  File "/usr/lib/telepathy/telepathy-butterfly", line 67, in quit
    manager.quit()
  File "/usr/lib/python2.6/dist-packages/butterfly/connection_manager.py", line 87, in quit
    conns = self._connections[:]
TypeError: 'set' object is unsubscriptable