I would post a crash report if there was one, but it launches fine except for the fact that if I try to make a new world it sends me back to the main menu and if I launch the world again it's incredibly laggy. This happens even with no mods. Another thing is the forge graphic/animation/loading thing that appears when you start the game isn't there; it's just the normal Monjang thing. It didn't start like this either, it worked fine... until it didn't. Thank you for your help.