On Mon, Apr 20, 2015 at 22:36:14PM +0300, Danil Smirnov wrote:

2015-04-20 22:22 GMT+03:00 Florian Fuchs <f@florianfuchs.com>:

...

That looks like incompatible versions of Postorius and mailman.client to me. The currently available ones on pypi and launchpad (released on Friday) should be working. Did you download them before Friday evening (EST) by any chance?

Nope. I've downloaded very last revision couple of hours ago.

OK, the problem was a file name conflict on the Python package index (due to an erroneously omitted pre-release suffix while parsing the version string of a previous beta-release), which eventually led to pypi delivering the previous release's tarball. I've associated a new file with the latest release on pypi so the correct tarball gets installed.

Sorry for that...

Florian