Welcome to the forum.
I do not recall any similar issues with the 8.0.1 update, but might have missed something.
A couple of things to look at first:
Update your video driver to the very latest from the mfgr's. Web site.
Update your audio driver to the very latest from the mfgr's. Web site.
Install the latest Apple QuickTime Player.
If those do not help, then maybe the tips in this ARTICLE will help you find clues as to what is causing the program to crash.
If that does not help, please give us as much info, as you can. This ARTICLE will give you tips on the types of info that will be useful.
Hunt suggested that I download the latest update to my audio and video drivers. I was going to do that later after I downloaded the latest Win7 updates. After doing that PRE8 began working again.
Excellent news. Glad that PrE 8 is working for you now.