I'm using Movie Studio 16.0 Platinum. I'm having a terrible time building a movie, as after I get a 30-minute movie with all mixed media added, the video track on my added videos goes blank. The audio portion is still there, but no video. I can save all I want during editing, but when a good project is re-opened, the video is missing. After an hour or so, it may return, only to disappear again. I have rebuilt this short mixed media project many times and am thoroughly frustrated. Sometimes, the video comes back if I hit the Power User Mode button and wait a while, but I can't tell when I am in the Power User Mode--and later the video disappears again. Does anyone have a suggestion to enable me to keep the video portion of my project?