You have a nice system, why would you intentionally cripple that by using the most troublesome and only 32 bit codec QuiRckTime when you have many alternatives. Why did you get a 64 bit system only to use that Apple 32-bit crap?
It sounds like, I have a new Porsche in the driveway, but I want to use my son's triwheel.
BTW, get the nVidia drivers from their site, don't use the default Win7 drivers.
Thanks, Harm. I just got a crash on a straight H.264 export, so apparently it isn't QT related. Obviously more testing is required. I'll report back in a bit.
In the meantime, I''l update the graphics drivers.
False alarm. It turned out to be that I was (rather stupidly) exporting the movie to the same external hard drive (eSata) as the footage resided on, because my 2TB WD Caviar Black video drives are back ordered and not here yet. As soon as I plugged in an internal SATA to temporarily use as a video drive, the problem went away.
Glad you figured it out. Now you realize how important disk speed can be. Happy editing.