Pro tools 9 crashes at startup "Bus error" in thread "MainThread", at address 0x0

[danball]

You guys are awesome, and I've solved so many problems before by just reading your advice. I hope you can help with this one too!

I have just installed Pro tools 9 as a crossgrade from Pro tools 8 LE. When I click on PT9 to start it, it gets to the point where it says "Video Engine failed to initialise" and then it returns the following error message:

"Bus error" in thread "MainThread", at address 0x0

and the program crashes.

I have found a couple of instances of this error message on the DUC, but can't seem to find one which matches my situation.

In addition to the software/hardware setup I've filled in, I have an owc firewire drive connected (formatted the pro tools-friendly way). I also have an externally powered USB hub for my ilok and midi keyboard. I've tried disconnecting that and just putting the ilok straight into the laptop. Still didn't work.

I have thrashed preferences and repaired disk permissions too, also to no avail.

I also decided to try uninstalling and re-installing PT9 BUT the uninstaller crashes too! So I can't even try a fresh install now.

Any help would be greatly appreciated.

Thanks!