Ok, so I just found out about this piece of genius, but when I try to run it to give it a go, I just get this message saying:
I've tried deleteing the files under appdata and re-launching, as well as reinstalling java, but to no avail.
Failed to Launch
Fatal error occured (5): null
Extracting: lwjgl.jar.lzma to lwjgl.jar
Does anyone have any ideas?