Mc feed the beast wont launch

[liviflame]

Title:

Mc feed the beast wont launch​

Launcher Version:

latest​

Modpack:

infitech 2​

Modpack Version:

latest 3.1.6​

Log Link:

http://paste.feed-the-beast.com/view/2a521829​

Details of the issue:

it just launches and closes. then reopens again. Any fixes ?​

 

[optmsuprime]

i'm having the same exact issue except it is all mod packs that do this

Launcher Version:
latest
Modpack:
any
Modpack Version:
any
Log Link:
http://pastebin.com/jNa4WSti

 

[jikuja]

http://support.feed-the-beast.com/t/ftb-infinity-crashing-first-time/17432/2?u=jikuja