Blank page when trying to manage Quip-Threads

Hi!

I updated MODx Revo to 2.0.5pl and Quip to 1.2.2 this week. Everything works fine in the front-end. But in the manager I get a blank page (there’s only the manager menu and the resource tree on the left, see attached screenshot) when I try to manage the Quip threads.

I flushed all permission, cleared the cache, reinstalled quip but nothing helped. No errors in the log.

I’m using
Revo 2.0.5pl
Firefox 3.6.12
PHP 5.2.14
MySQL 5.0.91

Do you have any ideas?

Uninstalling Quip, manually removing the Quip DB-tables and reinstalling Quip helped. But then all the old comments are gone away...