Guys I need help.  Affinity Photo on my Windows PC was opening a file, and I edited it completely fine — then I went and saved it. The program seemingly saved and closed the document and everything was fine. I transferred the file on an external drive and left it there for a couple of months. The photo was a part of hundred other documents I was collecting to use on a huge composite for a school final. Now when I attempt to open a file on my PC or iPad, it shows me an error that the Ap