I have the PRO version of Duplicate Cleaner (Digital Volcano). Today I was trying to cull obvious duplicate NEF files prior to doing a Lightoom import, but Duplicate Cleaner Pro doesn't identify any of the duplicates. Yes, I paid for this utility, but I'm entirely open to a new one, either free or even paid if necessary. So did I do anything wrong?

Here are my Duplicate Cleaner "Find Files" settings.

Duplicate Cleaner Pro not recognizing duplicates! Solution? Alterna?-image.png

And here is the target folder with all the obvious duplicates. (No I don't know how I created all these duplicates, but it was years ago, before I even started to use Lightroom.)

Duplicate Cleaner Pro not recognizing duplicates! Solution? Alterna?-image.png