Fresh install 6.4.3-rc2

Sebastian Spaeth Sebastian at
Wed Jun 29 15:15:15 BST 2011

On Wed, 29 Jun 2011 11:26:31 +0400, Ivan Semin <ivun at> wrote:
> I have set up the local imap mailbox and the remote imap mailbox with
> readonly=yes in offlineimaprc. It connected and logged in to both,
> copied the folder structure and then died with the following in
> stderr:
> WARNING: ERROR attempting to copy message 3 for account Data:Traceback
> (most recent call last):
>   File "/usr/lib/python2.6/site-packages/offlineimap/folder/",
> line 272, in copymessageto
>     newuid))
> TypeError: %d format: a number is required, not NoneType

Yes, there has been a bug fix for this in the current 'next' branch
already, so this will be fixed in the next release.

Also, there has been a bug fix for the IMAP<->IMAP case that could
potentially lead to missing out or duplicating messages and even data
loss (good you made the master readonly) and that I personally consider
the bug and its fix as critical.

I would therefore *strongly* recommend to use the current next branch,
rather than the -rc2 or even current master.

Download the tarball here:

I think we should be picking this commit into 'master' (or merge next
in) and release ASAP to prevent data loss.

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