Paul,
I am having the same problem. I have video from sony HDRXR520V
camera in m2t files. I loaded up the project about 1 hr 20 min long. just change some sound tracs about 5 titels from sony and some pip with stills. I tried on my new machine with win 7 ultimate , core i7 720 processor, 12 gb ram,nvidia fx3500 video card, this project plays fine on time line. when I render to ntsc dvd mpeg-2 it will render for 1 minute and shut down, I tried to render avi file samething. finally I copied every thing to external hd, copied back to my other machine with win xp,2gb ram,intel quadcore,ati5800 video card. started rendering project worked fine the whole project rendered flawlessly in 2 hrs 30 minutes and dvd is delivered.
this sure proves that movie studio 9.0b is not compatible with windows 7 64 bit version. How am I suppose to break it up in 10 minutes segment when I am doin a 1 hr 20 minute wedding video ?