Visual Editor Not Working in Version 3.5

Hello:

I was working on a website, this past weekend, and all of a sudden I was no longer able to edit the information in the Visual tab of the page editor.

I have tried just about everything. I have re-installed the latest version of WordPress, added the “Use Google Libraries” (as was advised in a previous forum), and even switched browsers.

I find it odd that many of us are experiencing this problem and there has yet to be a solid fix for it. Please advise, as I was supposed to have this website launched, YESTERDAY, for a client. Your help is much appreciated. Thank You