I would like to thank everybody for the help I have received.I have tried to e-mail tech. support but can't get through. I have about 50 video clips I am trying to insert into Vegas MovieStudio Platinum 9's Time Line. They range from 9 minutes to 30 sec. Everything works fine for awhile. I had about half loaded and decided to play through them to make sure I did not have any overlapping.As I was watching them on the preview screen I noticed on most,when it would come to the next scene I would get a quick green flash appearing on the screen. I deleted the project and started over. I would load about 5 scenes then check them as I went. Everything was looking great until I got almost finished then the green spaces appeared again as I previewed the video. Thanks.