Hey, I just wanted to follow up with you, and tell you that I fixed the problem when I called Apple. I’m going to explain it in detail, though for those who may have the same problem. I had somehow gone into my video file in the timeline and disabled it, thus resulting in a black screen, whereas if I disabled it in the editor, it would have just grayed the clip out. What I did to fix it was right-click on the file in the Event Browser, click “Open In Timeline” and re-enable the clip there. It fixed my problem completely! Thanks Jeff, for you help, though!