Instead of an EDR, try a quick repair first. This may do the trick. Remember though that the quick isn't so quick, and let it finish up.
John
LOL, I know there's nothing quick about any of the repair stuff. Like I said, I've really been using TS12, and I haven't really been using it for more than taking screenshots lately, since most of what I've been doing has been reskins and I'm getting started with 3ds Max too. Usually what I do is start it when I get home from work and go to bed, and it has worked its magic by the time I wake up.