When ever I try to create a new world on the Ultimate pack or the Mindcrack pack, it just gets stuck at the "converting world" screen. I checked the consul and it always stops at "loading dimension 0" Since I don't get this problem with the DW20 pack I'm assuming it has something to do with GregTech. I've tried deleting and reinstaling both packs multiple times AND I tried creating a world in the DW pack and importing it to both of the other packs but it just gets stuck at the "loading World' screen. Is anyone else getting this problem? And if so, can someone help?