Could you maybe explain the Registry events to me? I don't understand them...
//EDIT: I got the problem fixed by putting a random String in a place where the person the tutorial was from said it didn't matter what's in there.
Instead of:
public static ArmorMaterial PoSiTIonBarrierSuit = EnumHelper.addArmorMaterial("PoSiTIonBarrierSuit", null, 1000000000, new int[] {3, 8, 6, 3}, 3, SoundEvents.ITEM_ARMOR_EQUIP_DIAMOND, 10.0F);
I made it:
public static ArmorMaterial PoSiTIonBarrierSuit = EnumHelper.addArmorMaterial("PoSiTIonBarrierSuit", "wurscht", 1000000000, new int[] {3, 8, 6, 3}, 3, SoundEvents.ITEM_ARMOR_EQUIP_DIAMOND, 10.0F);
Now it's almost working, except for the items, which now don't have a texture...
(I already applied the patch 2)