Jean-Paul Calderone wrote:
This is most likely a bug in FTPClient. Could you file a ticket at http://twistedmatrix.com/trac/ (you need to register an account before the new ticket link will appear)?
Done, ticket 1914.
By only looking at the traceback, it is not entirely clear where the problem lies. Please include a minimal self-contained example which reproduces this traceback or a unit test which fails because of this problem.
This is difficult to do, because it's a ftp client library that connect fax client to an hylafax server (that act like an ftp server), so you have to setup one for try... Of course, if you have one, I'll send you all the needs for try.