Okay, after trying some Shadow over Donkey Kong hacks, i realized that none of them worked for me
So, i just deleted the donkey file in "fighter"
However, when I play, having the file removed, Donkey Kong is still there, but when the battle ends, the game freezes...just like when I used Shadow over Doneky Kong hacks.
Is there a cure, docter?
...
I found the issue! Man, do I need a facepalm