SkyFl4m3

Also, I have no files in the config folder as I dont know anything about that. Does that matter?

Hi, I have tried to make my own custom modpack, and when I launch it from the technic launcher the progress bar moves along, technic launcher dissapears and then re-appears after about 10 seconds, having done nothing. Most of the log is fine, apart from this part at the end: 2014-08-21 08:00:15 [sEVERE] [ForgeModLoader] There is a binary discrepency between the expected input forgified class net.minecraft.block.Block (aqz) and the actual class. Checksum on disk is 1006975e, in patch 138a6550. Things are probably about to go very wrong. Did you put something into the jar file? 2014-08-21 08:00:15 [sEVERE] [ForgeModLoader] The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files. I am running 64 bit windows and java, and this is the modpack folder link: https://www.dropbox.com/s/k1xy8n6crqke0l3/Modpack%20v2.1.zip?dl=1 Any help would be greatly appreciated.