minecraft crashes as soon as the game opens

Put the summary of the bug you're having here

*What I expected to happen was...: FTB, New World Mod Pack (v7.1) Minecraft Version 1.5.2 By kylemcqueen75
Would open and run as it always has...

*What actually happened is, i was in the game when i used "/f home". teleported after 8 seconds arrived at our faction home and the game locked up/crashed. Now minecraft crashes as soon as the game opens to last location (faction home).