white screen on main menu

[baylor316]

Title: white screen on main menu

Version: 3.1.3

OS: Mac os x 10.6.8

Java Version: dont know

Description of Problem:

alrightiv been playing tekkit for about 5 days when one day i opened teknic selected tekkit the it loaded fine came to main menu i clicked single player the the page turned white and wouldn't do anything i tried it many more times still wouldn't work i re downloaded teknic wouldn't work all other mods work teknic, voltz, yogbox, ect im on mac and not to computer savvy

Error Messages:

white screen

Error Log:

white screen