I right click on a picture and click select all. When I go to edit, I can't select the duration of all the pictures. I can only change the duration one picture at a time. last time I selected all and went to edit it I could change the duration. Why can't I do it now? Please tell me how. ( I started my project again because almost half my pictures were corrupt or missing or something like that all of a sudden. I can change the duration of the pictures with selecting all on my old project but on my new one).