That’s interesting.. Can you tell me what version of Sony Vegas do you have?
Btw, I tried one other way before. I selected my video in Project Media, right-clicked on it and selected “Media FX…” and tried to apply effects manually like that. Then the rendering actually worked, well, somewhat – Instead of 50% Pixelate I had to set it to 75% so I could get the same result as I had with 50% via Video Event FX. And also, the Cookie Cutter didn’t work properly – for getting “censor with pixelate” effect, I need to have a second copy of the video on timetrack, that must be untouched. But with “Media FX…” all videos get modified and so that wont work.
I still keep wondering, why wont it render…
I’ll try to reinstall Vegas, if that wont help, then I probably need to get a better version.