Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/papyon/switchboard_manager.py", line 79, in <lambda>
    lambda sb, contact: self.__on_user_invitation_failed(contact))
  File "/usr/lib/pymodules/python2.6/papyon/switchboard_manager.py", line 150, in __on_user_invitation_failed
    ContactInviteError.NOT_AVAILABLE)
  File "/usr/lib/pymodules/python2.6/papyon/switchboard_manager.py", line 125, in _on_error
    raise NotImplementedError
NotImplementedError