Crashes on line 167 in IMAP.py with "'NoneType' object is unsubscriptable"

[Christopher Barrington-Leigh]

Binary package hint: offlineimap

offlineimap rarely makes it all the way through it's tasks, crashing with

Thread 'Copy message 68060 from [Gmail]/Sent Mail' terminated with exception:
                                                                             Traceback (most recent call last):
                                 File "/usr/lib/pymodules/python2.6/offlineimap/threadutil.py", line 149, in run
                                    Thread.run(self)
                                                      File "/usr/lib/python2.6/threading.py", line 484, in run
                                  self.__target(*self.__args, **self.__kwargs)
                                                                                File "/usr/lib/pymodules/python2.6/offlineimap/folder/Base.py", line 277, in copymessageto
              message = self.getmessage(uid)
                                              File "/usr/lib/pymodules/python2.6/offlineimap/folder/IMAP.py", line 167, in getmessage
                                                         return initialresult[1][0][1].replace("\r\n", "\n")
                            TypeError: 'NoneType' object is unsubscriptable

                                                                           Last 1 debug messages logged for Copy message 68060 from [Gmail]/Sent Mail prior to exception:
         imap: Returned object from fetching 68060: ('OK', [None])
                                                                  Exception in thread Folder sync mynameGMAIL[travel] (most likely raised during interpreter shutdown):

              Traceback (most recent call last):
                                                  File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner
                                          File "/usr/lib/pymodules/python2.6/offlineimap/threadutil.py", line 233, in run
                                           File "/usr/lib/pymodules/python2.6/offlineimap/threadutil.py", line 169, in run
                                          <type 'exceptions.TypeError'>: 'NoneType' object is not callable

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: offlineimap 6.2.0+nmu2ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
Architecture: amd64
Date: Sun Oct 3 11:52:11 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: offlineimap

[Daniel Polehn (dpolehn-gmail)]

Is this bug reproduceable? This bug has been around for a while with now updates or confirmation.