Thats the message i get when i try to place down a monster spawner. And it turns right back to pig. I'm op and everything, and i have looked through the silkspawners.config about 100 times and i can't seem to resolve the problem. I have useLegacyname set to true but that didn't help any. i've read online some issues that may be causing this and they all turn out not to be. Please Help!