TinyMCE editor not working in visual mode

It seems after the upgrade to wordpress 3.2.1 i lost the TinyMCE editor from the visual mode. Searching google brings up a lot of other users with the same problem.

This solution worked for me but may not be the case for you.

Install firebug for firefox which will allow you to see what gets loaded when you access the Visual Editor.

 

 

As you can see i was getting 403 Forbidden for various js and img files. Changing the permissions back to 644 resolved the problem. After you have changed the permissions of your files reload the page and review your firebug output, look for any other files which are in the same state.