Costumes slot besides default, freeze the game after SSS.

[vityd]

I'm tryin to play the Bowser vs Bowser with my friend, but in my mod the costume slot besides 1 (default costume), freezes the game after Stage Select Screen.
I've Already tryied to check if the pcs and pac were the problem. So i switched the files FitKoopa01 to Fit Koopa00, and it worked fine.
So i think that the problem is the slot, but i dont know how to edit it or understand it.
Dos anyone have any idea?