Umm im using 64x java, I have 7 gigs allocated to MC. I'm using window 8.1 and i have 4 2.80 Ghz cores. I have been able to run every single modpack till this one, Ive also run modpacks that use voxelmap as well so i think there might be a messed up config or something not too sure.[DOUBLEPOST=1409185100][/DOUBLEPOST]Oh and minetweaker things? im still interestedI'm quite curious about this issue. What OS are you using? Graphics card? Java version? As much system information as possible would be appreciated.