StarSheep

What I'm trying to do is adding a hooks for changing sky color without creating a new biome. (I'm new to ASM, I used this tutorial : http://www.minecraftforum.net/forums/mapping-and-modding/mapping-and-modding-tutorials/1571568-tutorial-1-6-2-changing-vanilla-without-editing) The crash: The code: ASMHelper (some parts are stolen from https://github.com/SanAndreasP/SAPManagerPack/blob/master/java/de/sanandrew/core/manpack/transformer/ASMHelper.java)