I have Optifine, Forge, ChickenCodeCore, NEI, Inventory Tweaks, Rei's, and Timber installed. All the mods worked fine together and I could play well, up until yesterday, when I entered the 'Shopping Survival' map. It crashed, and now whenever I try to enter a world, it gets stuck on the 'Downloading Terrian' screen. I have never had that much trouble with Minecraft before, but it just will not budge! Multiplayer servers work fine - I can go on those no problem. But single player is basically broken! What should I do?
When entering a world, won't pass "Downloading Terrian" screen