This isn't connecting for me.
TWAIN is a scanner driver. Doesn't relate to Vegas afaik.
You could go to your Sony Setup folder, run the .msi, and do a repair installation.
Or you could reinstall your scanner drivers.
I've tried twice now with the same results. Neither install has created folders in Sony Setup. Would someone confirm if they have a vegas90.msi or similar. I have one for vegas 8 but not for the trial of version 9.
Thanks, I've tried three times now but getting this error message about twain each time. Vegas ( starts without this error message so something must be peculiar to version 9.
Thanks, you nailed it. A disabled windows image acquisition service was the problem. I wonder why I disabled it and whether there are any security implications in setting it to manual.