On Jul 06, 2012, at 11:20 AM, Jeff Marshall wrote:

First, I restarted mailman3 and the error at http://mailman3.jab.org:8000/persisted. Then I killed and restarted postorius and the error cleared up. The postorius instance is accessible again.

Thanks Jeff; so it does look like a bug in Postorius and not the core.

-Barry