I just spent hours on this and yeah, I commented it back in but it didnt work. Even worse, I made a recipe for the blimp, a custom item for it, and checked the entitiy classes also. Ultimately I got it in the game "working" code wise, but it cant spawn because, "the object you are trying to instantate is null" keeps coming up in the debug tool. So it seems imposible because there isnt a mesh for the blimp that works anymore no matter what we do.