Have am having numerous weird problems with Sony Vegas Pro 13. The last issue that happens was a track below the track that I was editing was ghosting onto the upper track being edited. I did not see it until the client pointed it out and deleting the lower track fixed the problem. I did check the transparacy level so it was nothing I could find that May have been a mistake on my part.
In addition, from time to time Vegas inserts a few black frames into a track if it is above a track that contains video. Again deleting the track below and re inserting the video on the upper track usually fixes the problem. So it seems to be related to any track that is above a track contains video. In my case I shoot interviews and add b roll on an upper track so it really is a big problem.
Lastly Vegas crashes frequently when I am in normal work mode and also claims it can not auto save on a regular basis. I don't want to switch but this is becoming impossible and have started eying Premiere.