After launching ssl-strip

Code:
sslstrip.py -p -l 8080
i get the following error;

HTML Code:
--- <exception caught here> ---
  File "/usr/lib/python2.5/site-packages/twisted/python/log.py", line 84, in callWithLogger
    return callWithContext({"system": lp}, func, *args, **kw)
  File "/usr/lib/python2.5/site-packages/twisted/python/log.py", line 69, in callWithContext
    return context.call({ILogContext: newCtx}, func, *args, **kw)
  File "/usr/lib/python2.5/site-packages/twisted/python/context.py", line 59, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/lib/python2.5/site-packages/twisted/python/context.py", line 37, in callWithContext
    return func(*args,**kw)
  File "/usr/lib/python2.5/site-packages/twisted/internet/selectreactor.py", line 156, in _doReadOrWrite
    self._disconnectSelectable(selectable, why, method=="doRead")
  File "/usr/lib/python2.5/site-packages/twisted/internet/posixbase.py", line 194, in _disconnectSelectable
    selectable.connectionLost(f)
  File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 677, in connectionLost
    Connection.connectionLost(self, reason)
  File "/usr/lib/python2.5/site-packages/twisted/internet/tcp.py", line 519, in connectionLost
    protocol.connectionLost(reason)
  File "/usr/lib/python2.5/site-packages/twisted/web/http.py", line 489, in connectionLost
    self.handleResponseEnd()
  File "/usr/lib/python2.5/site-packages/sslstrip/ServerConnection.py", line 108, in handleResponseEnd
    self.shutdown()
  File "/usr/lib/python2.5/site-packages/sslstrip/ServerConnection.py", line 134, in shutdown
    self.client.channel.transport.loseConnection()
exceptions.AttributeError: 'NoneType' object has no attribute 'transport'
I'm not much of a coder, but this tells me sslstrip is calling to some unknown function yeh?

Despite this error, in the sslstrip.log the authentication is picked up non the less.
I am inclined to tell you, i am running Debian Squeeze, but this forum was the only logical one to go to with my error.

So, any ideas?

Cheers
Bit