This started happening a few weeks ago. The video file format I’ve been able to render successfully is avi, which has made my ten minute videos over 90GB in size, so not ideal.
All my other attempts have resulted in either the program crashing or my entire system crashing to blue screen. I’ve tried freshly installing Vegas and later uninstalling the latest Windows 10 update, but nothing seems to help. I also turned off GPU acceleration and made sure all my drivers were updated. I have no idea what to do.