7.4.8.1895, I version locked once I started the project in earnest. As such I don't know why versions would suddenly be having difficulty launching when they weren't before. I understand how the android issue happened, but not this one.
Interesting. It launches when I download and use that specific version of the launcher, too... I'll see if I can pull some older versions of CabinByTheLake.app and see if there's a particular one that starts failing.
An update here @nunu: the latest version works just fine! So... not sure what changed. I wonder if I had a corrupted save or something and booting the game via the renpy SDK fixed it or something.