Thanks, Laughing Man. This was indeed a info banner related python bug, and it was fixed only 6 weeks ago, so some people still have the old package.

I uploaded a new release that works around this problem.

http://www.henso.com/files/grumby/

I also implemented looping through widgets using the play times defined in the channel. This works quite well, except for widgets running in cooperative mode such as the youtube widget, where the flash movie sets a flag when it's done (just couldn't get the Javascript working to read the flag from the flash movie).