After using Save & Exit several times, this message appears and the game crashes.
I’ve had that issue too. Because I’m a bad boy and abuse the shops, when I’m teambuilding.
This is an issue with GameMaker, unfortunately, so there’s nothing I can do. They’ve known about this issue forever and I honestly doubt it’ll be fixed any time soon.
Maybe make Save & Exit close the game?
Or just add a quit to desktop option.