I had a bunch of "Widget Areas" registered for my theme. I removed a few and added a few. The ones which I removed, I deleted the code which is hooked on widgets_init for registering the sidebars. I ...
I updated to WordPress 3.3 (manual update) and cleaned browser cache. Widgets dashbord stop working when tring to expand dynamic sidebars for custom theme when it works for previous wordpress 3.2 ...