Sorry to bother you guys! I've probably got a really stupid problem but I can't work it out. Whenever I create a world it instantly sends me back to the main title screen, then when you go back into the world selection screen nothing is there. When you look at the data for the worlds it looks like it stoped generating
The logs look like this when generating a world
My modpack (if that helps)
http://technicpack.net/modpack/liberosis-adventure.858801
( Also It doesn't come in forge with mods loaded, I add the mods later by replacing the files with the modpack inside the folder. It's a bit need-lessly complex but I can't work out how to do it ^^ Sorry!!)