Unable to run sightspeed in vista ultimate x64

I rather enjoyed sightspeed back when I was running xp, and now it won't run in vista. When I start the program it will start, get about a third of the way through video optimization, then crash. I have tried it in standard vista compatability, xp sp2 compatability, run as administrator, updated my video card drivers (ATI HD 3870), downloaded and reinstalled the latest version of sightspeed, and still no joy. Any help would be greatly appreciated.

Have you checked with SightSpeed to see if the version you are running has any issues with Vista x64?

That's the place to start...

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