Bruce- I too am getting the "the following codec(s) must be activated before using this application... and 'bad installation" error for the MPEG-2 codec. I have a 13 month old Dell XPS w/4GB of memory (added to insure that wasn't the problem), a 2.79GHz processor, 400GB of spare hard drive space, I have been working on this for 4 weekends. It started because MyDVD froze up when starting the burn, so I followed the instructions to eliminate the OEM installed Sonic/Roxio apps, clean the registry and bluescreened the computer. Did the system restore and finally got the machine running, but still didn't have Roxio running. After a lot of handwringing, I finally committed to a fresh xp install, so I did a complete format and reinstall of xp and installed roxio as the first software and still got the same MPEG-2 errors. After 4 weekends, I am reluctant to start this process again. I have installed 30 other apps on the machine w/no problem, except this one. There has to be something simple that is being missed. How do we find out if the product is being repaired by Roxio? Ideas?