Cannot load any modpacks

[MrJvfd3]

 Title: Cannot load any modpacks
- Type of Bug: Launcher Bug
- Reproduction rate: 4/4
- Steps to reproduce:
Launched Technic Launcher
Run any downloaded modpack

click play
- Expected result: Minecraft should start
- Observed result: forge windows appears(or not), and them,closes, and returns to technic launcher window.
- Insert logs : http://pastebin.com/RPZZWRkq
- Fill out the Issue details in the sidebar to the best of your ability (Severity, Version, Java Version, OS)
Severity: I don't know

Version: 1.6.4

Java Version: Java8 Update25

OS: what is OS?

Edited December 6, 2014 by MrJvfd3