I will have to download the Itch launcher and see what's different. Added it to the list to do!
When does the error happen? I need to come up with a bug report template soon.
It's up next on the do list, actually! Was about to begin the bug hunt now. Have you tried to manually download the file and see if that also doesn't work in the meantime?
Thanks for the continued intent to play it in spite of that! Menu errors are the second worst, and that note has helped me narrow things down quite a bit. Whenever you -do- get to play I hope it was worth your efforts.
Lucky both of us, actually! I got it (for now)...
Alright, all you need to do is go to where the game is installed and add two new folders - an empty "www" folder just next to the executable, then a folder named "save" inside that, and everything worked again on my end. The bug appeared when trying to write your options to a directory that didn't exist.
If I had to guess, it's because they would look like orphan folders to the app, and when it pulls and installs the executable it didn't seem to drop those in for me. That might be an itch app problem I can't solve, but I will absolutely put a warning on the top of the page here!