In your Nvidia control panel, you can specify the programs that use the Nvidia. I have mine set to Vegas 11, 12, and now 13. Otherwise I get the same message.
I just installed VP13 to trial it over the weekend. Because VP13 came with GPU on by default and I didn't have the Nvidia set to include VP13, the program crashed on launch with the "Vegas Pro has stopped working" message. My solution was to add VP13 in the Nvidia control panel. After that I was able to launch VP13 successfully. Then I turned GPU off in VP13. Now it doesn't matter what my Nvidia control panel says -- unless I turn GPU back on in VP13.
I'm not sure why I see this behavior, but that's what I've seen when GPU and Nvidia are involved on my machines.
Yes I had VP12 included in the list but NOT VP13. I DID have the GPU CUDA Global ALL active. But now, now that I've manually added VP13. Its LOGO - the film strip logo, is appearing where didn't before and at initial testing, using NBTP3, as a GenMed Event, NBTP3 is whizzing along.
Just going OT for a moment, just in case New Blue are reading this, but it would be nice if the NB bulk email facility could recognise that you have already bought Titler Pro 3 and stop emailing you to buy it.