Folder name of the packaged mod is fmpower, should have been fmpower_1.0.4. Easy to fix, but it prevents the game from starting if left alone.

The game never cared about the name of the internal folder, is that new?

Nope, I can't reproduce this. Works fine on my end.

Still an easy to fix bug...

But it's not a bug? Why fix what's allegedly broken for a single person? If I can't reproduce it after testing it on windows, linux and macOS then it's not something that's necessary to do.

As it is it would just add more work for me when I release updates (however infrequent that is these days).