no it's not a problem in that, I had vegas pro 13 until 2 days ago and it was also reporting this same crash, before that it was working fine for 1.5 years, so I installed vegas pro 14 and same thing...
Yess, the drivers for your videocard were updated by the Windows update. My experience is that most of the times Windows installs not the right drivers for working with video editing software.
So try to roll back to your old drivers from before the update.
I actually updated to the newest recommended drivers yesterday so I think thats not really the problem but may be