Hi, I finally purchased Minecraft and got FTB too. When I start the game thru FTB and try to play the Singleplayer it gets stuck on 'loading.. building terrain' and I get this crash report that I have uploaded to pastebin. If i ever get this fixed I will look to install OptiFine too as my computer is low-end. Any help is greatly appreciated. Thanks!
http://pastebin.com/yDxF28ru
http://pastebin.com/yDxF28ru