About this old post:
I'm reviving an old hack of MarioKart myself. Attempting to make it hard with in reason unlike pro edition. The sad thing about pro edition is as far as I consider it is impossible to get to the special cup. Epic edit will not access the game either thus there is no way to even see what the special cup looks like.I take it that's because that hack has been made with MAKE. I didn't bother making Epic Edit compatible with MAKE-modified ROMs, because it looked like more trouble than it's worth (.smkc file compatibility was good enough to me). For the record, tracks in the original SMK are compressed, and MAKE changes that to make all tracks uncompressed, altering the way SMK loads tracks. EE, on other hand, just follows the logic of the original game. So EE fails to open MAKE-modified ROMS because it tries to decompress tracks that are not compressed. If you'd like, I could still extract the tracks from any SMK hacks by tweaking EE locally (or you can do it too if you know a bit of C#).