Windows .exe Blue screen when launching?

[reecedevonport]

Hi, I'm new to FTB, I have downloaded it and installed the Direwolf20 modpack, and when I launch it it gets to the Mojang logo and it has that annoying blue screen with minecraft at the top.

I have created a pastebin of the error that is given to me in the console. http://pastebin.com/C8u4Xix6

Thanks.

 

[Nessiroj]

First of all welcome to FTB

2013-01-28 21:37:30 [INFO] [STDERR] Exception in thread "Thread-9" java.lang.NoClassDefFoundError: Could not initialize class sun.security.mscapi.SunMSCAPI

I see quiet abit of these errors in your logfile, not sure what's causeing it

i see your install path looks right:

Loading URL: file:/C:/Users/Reece/Desktop/FTB/Direwolf20/

so that shouldn't be the problem, i'm not sure if the error is caused by java itself or by a missing / incomplete download.
Could you try to download a different pack in the launcher (or DW20 V4) just to see if you get the same problem or that it was caused by maybe old files on the repo?