ValueError: Backend could not find uid for message

[Michael]

Dear all,

Sorry to revive this old thread, but I am seeing this error all over my large
mailbox when I try to synchronize two cyrus imap mailboxes ( debian) .

I am using 6.5.2.1. The patch mentioned in this thread is in this source. 
Below the log file as asked for by Sebastian.

Any ideas where to start to look would be greatly appreciated.

2012-03-22 21:38:18 WARNING: Thread 'Copy message from Sam_xxxx:INBOX'
terminated with exception:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/offlineimap/threadutil.py", line
155, in run
    Thread.run(self)
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/local/lib/python2.7/dist-packages/offlineimap/folder/Base.py", line
300, in copymessageto
    new_uid = dstfolder.savemessage(uid, message, flags, rtime)
  File "/usr/local/lib/python2.7/dist-packages/offlineimap/folder/UIDMaps.py",
line 195, in savemessage
    "%s" % newluid)
ValueError: Backend could not find uid for message, returned 0


Last 5 debug messages logged for Copy message from Sam_xxxx:INBOX prior to
exception:
thread: Register new thread 'Copy message from Sam_xxxx:INBOX' (account 'xxxx')
imap: Returned object from fetching 302: 'Return-Path: <#@[]>
Delivered-To: xxxx at homeway.cat
Received: (qmail 9873 invoked by alias); 28 Oct 2006 10:40:28 +0100
Delivered-To: postmaster at ...ca, sans-serif"><br>
</font></p>
</body></html>
'
imap: savemessage: called
imap: savemessage: date: "28-Oct-2006 10:40:28 +1000", content: 'Return-Path:
<#@[]>^M
Delivered-To: xxxx at homeway.cat^M
Received: (qmail 9873 invoked by alias); 28 Oct 2006 10:40:28 +0100^M
Delivered-To: postmast...ans-serif"><br>^M
</font></p>^M
</body></html>^M
^M
^M
'
imap: savemessage: returning new UID 0
2012-03-22 21:38:18 WARNING: ERROR: Exceptions occurred during the run!
2012-03-22 21:38:18 WARNING: ERROR: Backend could not find uid for message,
returned 0

Thank you

Michael