problem upgrading from offlineimap 6.3.4 to 6.6.1

[Tomas Nordin]

> I wonder if the big step foward from v6.3.4 to 6.6.1 (more than 4 years
> of development) could be the cause. Since it's a long time between
> releases, I wonder if temporary code to help moving forward could have
> been introduced and then removed within this gap.

I have made an upgrade from 6.3.4 to 6.6.1+dfsg1-1 on

$ uname -a
Linux debian 3.2.0-4-686-pae #1 SMP Debian 3.2.68-1+deb7u1 i686 GNU/Linux

and have not experienced problems related to the upgrade.