So I've been having this problem and I have figured it out. I believer the shutter gets stuck after the first picture is taken. If you open up the film door and close it back up right away, it resets the shutter and takes the photo and prints it right out. If you don't open the door and close it right away, the next photo comes out black. I know it says not to open the door but it does help and the photos come out clear. Just do it in a dark area.