FIX!! (that worked for me)

ok, so I was playing with getting all my codecs installed and suddenly after restarting Media center is complaining about it's receiver service.

First of all I went to GSpot and had it scan for the offending codecs.. Secondly I opened regedt32and made an export of the entire registry (took about 10 minutes) After this I went to the registry key of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32

Most of the conflicting codecs were listed for me in Gspot and I removed them one by one. They are easy to spot as they all start with ms (ex. msdivax.acm) Rescanned with GSpot and removed.. Restarted and everything is working great.. No more crashing receiver service and all videos are playing fine.

Hope this works for everyone else, cause I really was frustrated not having a backup to go to, and the only option to reinstall. Good luck.