i have the newest version of Mekanism and Crack pack, and every time i try to install mekanism into the pack, it loads for about 3 minutes then just crashes straight away and takes me back to the ATlauncher instances screen, Ive looked around loads of forums and have tried a few things that people have said fix it, but none of them have, is there anyway you could help or know a way to fix it? i really want mekanism in the pack :(