I was able to get the cut detector to run without throwing any errors by using the PySide2 branch and changing your hard coded username from /Users/ant/.nuke/Python/Startup/cut_detection/cutDetector.nk to ~/.nuke/Python/Startup/cut_detection/cutDetector.nk
After dragging footage onto the icon and hitting yes to the dialog, it runs through the progress and then nothing happens. Hitting the update button fills in the shot thumbnails and creates a new project containing a sequence with the footage in it. Is this the expected behavior? If so, I don't think Update isn't a good name for the button. Maybe "Create Sequence" or similar.
The main issue is that the newly created sequence doesn't include any edits, just the footage in one piece, same as if I had dragged it in.
MacOS 10.13.6
Nuke 11.2v3