I just lost nearly 2 days video editing time because I just now discovered that installing the DivX suite of software cripples Adobe Premiere Elements 9. I uninstalled so much software and reinstalled Adobe Premiere Elements 9 trying to figure out the problem. Not only that, Adobe Premiere Elements 9 kept locking up on me, it was making me crazy.
I read on the Adobe forums that someone wrote that Divx did not get along with Adobe Premiere Elements 9. Well, that was all I needed to follow-up. I uninstalled Divx and that seemed to solved all my lockup and video editing problems.
For the moment, my system is humming along now that I got rid of DivX. What an unpleasant experience.