i also got this error once, but it was with emesene and papyon pre-0.5.5

2011/4/15  <bugzilla-daemon@freedesktop.org>:
> https://bugs.freedesktop.org/show_bug.cgi?id=36258
>
>           Summary: assert(self.state == ProtocolState.OPEN)
>                    AssertionError
>           Product: papyon
>           Version: unspecified
>          Platform: Other
>        OS/Version: All
>            Status: NEW
>          Severity: normal
>          Priority: medium
>         Component: general
>        AssignedTo: papyon-bugs@lists.freedesktop.org
>        ReportedBy: l.bigonville@edpnet.be
>
>
> Hi,
>
> not sure if it's related to tp-butterfly or papyon
>
> I've just updated papyon to 0.5.5 and get this backtrace while chatting with a
> contact
>
> Traceback:
>  Traceback (most recent call last):
>   File "/usr/lib/python2.7/dist-packages/butterfly/channel/text.py", line 125,
> in _send_typing_notification
>     self._conversation.send_typing_notification()
>   File "/usr/lib/python2.7/dist-packages/papyon/conversation.py", line 350, in
> send_typing_notification
>     self._send_message_ex(content_type, body, headers)
>   File "/usr/lib/python2.7/dist-packages/papyon/conversation.py", line 365, in
> _send_message_ex
>     return self._send_message(message, callback, errback)
>   File "/usr/lib/python2.7/dist-packages/papyon/conversation.py", line 491, in
> _send_message
>     callback=callback, errback=errback)
>   File "/usr/lib/python2.7/dist-packages/papyon/switchboard_manager.py", line
> 108, in _send_message
>     self._process_pending_queues()
>   File "/usr/lib/python2.7/dist-packages/papyon/switchboard_manager.py", line
> 239, in _process_pending_queues
>     transaction_id = self.switchboard.send_message(message, ack, callback)
>   File "/usr/lib/python2.7/dist-packages/papyon/msnp/switchboard.py", line
> 171, in send_message
>     assert(self.state == ProtocolState.OPEN)
>  AssertionError
>
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I just got this error with 0.5.5-1ubuntu1.2 in emesene. I have a direct connection to the router, and no disconnections happened as far as I can tell. It appears that any messages I sent were not received.