I am building a mod that has a custom zombie entity. It was rendering fine in 1.8, but after I updated to 1.9 and fixed the errors the entity kept getting spawned as a pig. I'm 99% sure this is an error on the registers part. I already looked through the known bugs and ran a search and could not find anything like this. Here are my logs:
Client: http://pastebin.com/i1Z35Jvm
Server: http://pastebin.com/E6pXDACp