Oh yeah forgot about that; it likely is bone count, then
Ok, this all make sense, I too also forgot about that...
Post Merge: May 21, 2017, 06:41:12 PM
Jigglypuff uses a different boneset for it's green slot. Donkey Kong may only read Jigglypuff's default boneset all texture slots causing a crash when the green slot is chosen.
Well, you know what? I just replaced the model and texture files from my model over jigg's green costume. Works properly now, it was only missing the cap model stuff. So thanks to you bro.