white screen when a mod pack is launched

[Entropy8]

Launcher Version: 1.0.1.3

Operating System: windows 7

Java Version: Java 7 update 5 (64-bit)

Antivirus Program:

Description of Problem:

whenever i try to run a modpack it launches. i see the Mojang logo for a few moments then the screen turns white and never loads the pack. i have tried to look for the files for the technic launcher to delete them and try to reinstall it, but i can't seem to find them.

Error Messages:

Error Log:

[Cubemaster192]

i have tohe same problem,,,

try logging in on a different account or downloading .net version 3?

[Torezu]

The files will be in C:\Users\[user_name]\AppData\Roaming\.techniclauncher - if there's a logs directory in there, post launcher_0.log from inside it. Use pastebin please.