Why do I keep getting a "failed to save document error?" in [ARCHIVE] Photo beta on macOS threads Posted July 4, 2017 I keep getting this error when I save a file from within affinity that was opened in Apple Photos. When this comes up it deletes all the work I did in my edit! Why does this happen? It is a very frequent error. It says it failed to save since it was already open in another app but opening the photo in Apple Photos is the only way to get to the editing extension. I am very confused as to why this keeps happening.