I've spent day editing clips for a video (when I should have been writting, so serves me right
) on vegas 9, I only used it once before. I rendered as I went along to check it and it was working fine. I even rendered the full video today and it was working, when I went back to do it again it didn't work. I didn't add anything else, I was still rendering to mp4, slight better quaility and it's not a memory issue. I unticked 2 passes because that can be an issue, I reinstalled and no change. It looks like it rendering but never passes zero. After giving up several typing days lost I'm reluctant t o give in, any suggestions?