I used to switch between Direwolf20 pack and the Mindcrack pack, and when I saw Morvelaira using the FTB Ultimate pack on her stream and I decided to try it, so I deleted my FTB_Launcher.jar and re-downloaded it fresh from feed-the-beast.com. No pack has launcher correctly since then. I have installed my FTB in a non desktop folder, at ~/FTB/FTB_Pack, and usually launch it with 3 GB of ram, and THIS code in the Additional Java Parameters section of Advanced Options. I launch my FTB_Launcher.jar with THIS code in terminal. I then get THIS error code whenever I try to load the pack. Please help me in anyway you can, please give me and suggestions or advice you can on how to get FTB working again, and thanks for taking the time to read my post.