Red Frames of Death
 

Here's a screen cap from the lastest disaster. I finally pieced something decent together after about 10 crashes in 3 hours. Then it crashed during rendering, at about 90% complete.

You can also see the nice big gap in the audio (capture issue). Those are fun to work around.

That big red area is a bad spot in your file and probably the reason for your crashes. Do a search here for MPEG2 Repair and try to repair that file or recapture again. Are you using Vegas' capture app or some other one? If some other one, try capturing in Vegas.