Hi, I get the exact same situation in WP 3.5, the editor doesn’t completely load and no pages are editable.
Unfortunately, I don’t have the javascript error console installed, I don’t know how to use it. But if you let us know the command lines to put in I can install and run it and I can post the error messages here.
Btw – wrecknoble, in the meantime I installed Codeart – google mp3 player until the issue is resolved. But my first preference is Pupunzi’s audio player.