I'd just like to add that we identified a potential cause -- between when this was last working and now, we'd upgraded to workflow-ng 2.x. After an upgrade to UC beta 7, we were getting some workflow module errors and decided to upgrade. After Shawn's debugging comments, I have a hunch it may be related to that, but I'm not much of a module developer/troubleshooter, so I can't say much more than that...