Thank you so much for you replies to my inquiries about the Ken Burns effect. This time I would like to know how to take out of my video 3 gray panels that appear only when I preview. This is the one that says--hold on, the software isn't ready for another operation yet. I went to see it again, and it says "Building Preview." I only see it when I preview, so I was wondering how to find it in the regular software so I can take it out.