Bug Modpacks not launching.

[spiderharry02]

HELP, none of the modpacks want to launch,
when i try it just goes grey for a second like normal, then launcher closes and reopens instantly
and that happens with all the 1.6.4 modpacks,
help pls???!

 

[spiderharry02]

Here is my try of launching running red (the first modpack) http://pastebin.com/TLru1RYY