crash when starting hexxit via techniclauncher

[misteryguy]

Title: crash when starting hexxit via techniclauncher

Version: 1_0_4

OS: windows 7 ultimate 64-bit

Java Version: 1.7.0_45

Description of Problem:

I just dowloaded techniclauncher and installed the hexxit pack as the only modpack. When I press play it starts up a minecraft instance but with a black screen. after a while i get a crash report.

the full content of the crash report can be found here: http://pastebin.com/P8m3fys8

it does not tell me much but maybe others can help me and tell me what to do.

Thanks in advance.

Error Messages:

Error Log: