This is for Movie Studio 13.0 but I don't see any other place to post this. When I am doing a pan and crop, sometimes as I move the slider down, I get a big red block. This is on the preview window of the Pan and Crop popup. It is not on the movie window. I don't know what is causing this. It usually is only for a few frames. Anyone has any idea what could be causing this. I saw a youtube video about it using a certain plug in. Don't remember the name of the plug in. The only plug in I have used is the one for brightness. But it happens even if I am not using it. Thanks.