White screen FTB private packs

[lukefu96]

salve, ho un problema sulla ftb. when I start the pack private, after loading the mojang, I get a blank screen and I get this code:http://pastebin.com/jcxZdwGN.
I get only the private pack. Help me Sorry for my english, but i have Italian

 

[001100110]

Salve! I looked through the log and it seems as soon as it tried loading MMMPS it failed. Try updating JAVA and see if that helps also what OS do you run because that will help.

 

[lukefu96]

I have windows 8 and java 7 update 40...thanks