Here's what I did: I backed up the game's original files and copied the "dlc" folder with the original files into the game's directory, so the tournament schedules were all reset, and from that I rebuilt my tournament structure from scratch. When I went to save, this popped up:
About a dozen times. My files save normally after I get rid of them all, but I have the feeling this has to do with the game crashing, but I have no idea why, or even what that means.
I've also been wondering if this has to do with me using .CMP files to insert my leagues into the game.