Dunno if you guys even read the comments at all but I just noticed something and this probably happened after you updated the game.
In the past when I played my save file said "Stargrove Scramble" but I just re-downloaded the game and started over and now the save file says "Tailspin." It looks exactly the same as the Tailspin save though it's still saved in the ngjam folder that Stargrove saves in. Should probably fix that.