For last two days or so I've been furious over the upgrade from Movable Type version 3.2 to the new MT v4.21. Man! I had some fun with it, let me tell you! My personal blog template is gone, Filter27's comments don't show up, numerous server errors, etc.
Bottom line: Movable Type still sucks. Wish I could simply switch to WordPress... I'm sick of spending days and nights by upgrading a stupid software. I just want to blog...
Glad you got it fixed, and sorry you had such a struggle with the upgrade. On the plus side, we do have a team here in NYC that works extensively with Movable Type and we plan to start doing events in the future to help you get more out of MT, so hopefully that can be a useful resource for you.
Thanks, Anil, for your comment. I really like Movable Type as a blogging platform, however, the upgrades are major downside. Each release seem to be having different set of tags, templates and overall set-up. What's up with that!?