I have Sony Vegas Movie Studio Platinum 8.0 on windows 64 bit 7. I made a very simple project: one overlay with text and one movie clip. Total is about 1 min and 10 seconds. When I try to make a movie and save it to a hard disk, the movie is not made. I tried every single format when making a movie but when I try to play nothing shows, just black screen. The length of the black clip is only about 12 seconds. What am I doing wrong?