Did you download all the files? One case is that the file you downloaded is incomplete, and the other case is that the file you downloaded is not in the position you said in the picture. Find out if there is 12.mov in it, and then put it in the position you said in the picture. Or search for the missing file in the picture (the file must have the same name) or the last two, literally. I hope I can help you. Thank you.