4.0.12 crash with SELECT failure

[Andreas Hasenack <ahasenack@xxxxxxxxxxxx>]

Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/offlineimap/threadutil.py", line 153, 
in run
    Thread.run(self)
  File "/usr/lib/python2.4/threading.py", line 422, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.4/site-packages/offlineimap/accounts.py", line 220, in 
syncfolder
    remotefolder.saveuidvalidity()
  File "/usr/lib/python2.4/site-packages/offlineimap/folder/Base.py", line 106, 
in saveuidvalidity
    newval = self.getuidvalidity()
  File "/usr/lib/python2.4/site-packages/offlineimap/folder/IMAP.py", line 62, 
in getuidvalidity
    imapobj.select(self.getfullname(), readonly = 1)
  File "/usr/lib/python2.4/site-packages/offlineimap/imapserver.py", line 43, 
in select
    raise ValueError, "Error from select: %s" % str(result)
ValueError: Error from select: ('NO', ["SELECT could not open 
'MailBox/somefolder/', error: 1081"])

Server is FirstClass, which is known to not be a very well behaved IMAP server.
But this crash is different: the folder in question can't be selected, but it
shows up in the LIST output and offlineimap can't handle this error it seems.