Forge force closing minecraft?

[TheBootyEdition]

Ok recently I have not been able to run minecraft and load it to the starting page, as far as I can get is to the minecraft loading screen. As soon as I hit play it closes java entirely, I was watching my task manager to see if it actually was closing the java and, of course, it was. So i tested this using a profile without forge, and I was able to run vanilla minecraft. I also reinstalled java7 to see if that was the issue and it wasent. I am currently using forge 1121 1.7.2 version

If anybody can help me out it would be greatly appreciated.

Thanks

[shieldbug1]

Post the log.