"Can't create mailbox node" with fastmail.fm IMAP <-> IMAP

[Simon Waldman <lists@xxxxxxxxxxxxxxxx>]

Hi. I'm a new user of offlineimap, and I'm trying to set things up to 
synchronise my local IMAP server (which I've just set up, using the 
standard mandrake "imap-2004" package, for use with Thunderbird) with 
fastmail.fm.

I started with an empty ~/Mail directory, and the first sync went fine - 
offlineimap downloaded the contents of the fastmail IMAP account and it 
appeared locally.

Subsequent syncs, however, crash with the following:

Thread 'Account sync fastmail' terminated with exception:
Traceback (most recent call last):
   File "/usr/lib/python2.3/site-packages/offlineimap/threadutil.py", 
line 153, in run
     Thread.run(self)
   File "/usr/lib/python2.3/threading.py", line 416, in run
     self.__target(*self.__args, **self.__kwargs)
   File "/usr/lib/python2.3/site-packages/offlineimap/accounts.py", line 
118, in syncrunner
     self.sync()
   File "/usr/lib/python2.3/site-packages/offlineimap/accounts.py", line 
133, in sync
     remoterepos.syncfoldersto(localrepos)
   File 
"/usr/lib/python2.3/site-packages/offlineimap/repository/Base.py", line 
124, in syncfoldersto
     dest.makefolder(key)
   File 
"/usr/lib/python2.3/site-packages/offlineimap/repository/IMAP.py", line 
185, in makefolder
     raise RuntimeError, "Repository %s could not create folder %s: %s" 
% (self.getname(), foldername, str(result))
RuntimeError: Repository Local could not create folder INBOX/Work: 
('NO', ["CREATE failed: Can't create mailbox node 
/home/simon/Mail/INBOX/Work: File exists"])


The obvious thing seems to be permissions issue, but /home/simon/Mail 
and /home/simon/Mail/INBOX are 700 and the contents of the latter are 
600. I tried setting 777 and 666, and it didn't help.

Can anyone make any suggestions of what else could be wrong? Thanks. 
Please ask if there's any other information I can provide which would be 
useful.

Regards,
Simon.

-- 

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Simon Waldman, UK            email: swaldman@xxxxxxxxxxxxxxxx
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