Still having problems with your add-ons eh?
Its no problem just update the current ones you have and then copy them to a new folder on your desktop...
Then go back into your Warcraft folder and delete the following three folders...
Cache, Interface and WTF
Log back into Warcraft and go through the process of reinitializing your Sound, Video etc. to your own feel and such
Log out
Throw your add-ons back into your interface folder and the problem should be solved.
I tried and tested this practice earlier this evening and it worked for me like a charm =]
Also, I downloaded the curse client which searches and updates out of date add-ons by itself
