I should also mention I’m on a Mac, so not being sure if you offered PC-based advice, I went through all the key combos:
Shift-launch – started PP, but no change. Recent projects show up on splash screen, file imports still yield error message.
Opt-launch – started PP with history of recent projects gone from the splash screen, so I assume this was what was desired. Still getting same message on import.
Ctrl & Cmd combos don’t launch PP.
I’ve tried importing into the project footage used successfully in earlier projects and still get the error message. Jon, I think you’re on the right track. Is there a specific file or folder I can search for and delete that might recitfy this?
Craig