I notice the Stylecatcher is not working since upgrading to 4.2 from 4.1. Even in a completely fresh blog (not a fresh installation, just a newly created blog on the same installation), nothing happens. When I select a style, nothing appears in the Current Style block and nothing gets applied.
Since it happens even in a new blog, what system-wide things can I look for that might be stopping the stylecatcher from working? Any ideas?
Reported on Movable Type 4.2

I wasn't able to reproduce this, can you reply with step-by-step guide to reproducing the issues?
When you upgraded, did you start with a clean 4.2 mt-static directory or did you copy things from the 4.1 mt-static directory to the 4.2 mt-static directory?
At first I started with a clean mt-static directory, but as per my reply here http://forums.movabletype.org/2008/08/known-mt-421-upgrade-issues.html#comment-6725 I re-uploaded my "userpics,assets-c, uploads and themes directories." You think something might be wrong with the themes directory?