I was working on editing photos and when I went to open more photos to import I receive a message (unable to open...). I have closed the program and shut down my computer. Thoughts? I have a deadline coming up.
Are you on a Mac? If yes, is the external drive formatted to a Mac specific (ExFat) format?
The newer Mac OS - Catalina and Big Sur cause security exceptions that prevent PS from opening files directly from an external not formatted to Mac specific formats.