joc3554 wrote:
I have also removed the files from the flash drive, then re copied the photo from the iPhone back onto the flash drive, but still no luck, I get the same error message from Photos.
Why are you using the flash drive? It adds complexity to the process, more opportunity for something to go wrong. And how are you copying from the iPhone to a flash drive? Are you using some other utility for that? If so, it might be doing something to the file format of the image files.
Why not simply import directly from the iPhone into the Mac Photos library? And if that does not work, try it with a brand new empty Photos Library to try to narrow down the issue.
Also, verify the integrity of the Photos Library: can you import other jpg files of any sort that are somewhere else on your Mac? If the Library itself is corrupted and refuses to import ANYTHING, that can be dealt with through other corrective measures.