Can't Launch any 1.6.4 packs

[Zoom Zee]

Every time I try to launch any of the 1.6.4 packs it does nothing, the only thing that changes on the launcher is the "Launch" button becomes faded out.

http://pastebin.com/uBzL2bKp

Things I've tried

• I have uninstalled my java and re installed the 64bit java only
• I have re installed the launcher and packs
• My OS is 64bit

Any help would be great thanks

 

[Argon]

I found all the junk about Java had nothing to do with it.

I just deleted the FTBlauncher folder in my Appdata, and it worked fine.

 

[Zoom Zee]

I just tried that, still getting the same problem