It's my understanding that the server had a hiccup and the body uploaded incorrectly, or some ****. Since you cannot equip the body, you have to contact an admin to have it removed and then reupload it.
I had this happen with a head. You must send a ticket to toonslab.ask for a full refund since the body didn't work and they will do it. Or probably it was before toonslab got hacked and they decided that since they got hacked they never have to do tickets again or respond I guess.