White Screen when a modpack is opened

[Black Indy]

Launcher Version: Latest Version as of 17th of March 2013

Operating System: Mac OSX Lion

Java Version: 64 bit Java

Antivirus Program: Mac Keeper

Description of Problem:

I downloaded the latest technic launcher then i tried to open vanilla minecraft after the modpack had loaded it opened a window labeled vanilla. The window went white then the vanilla window and the launcher just shut down.

PLEASE HELP I REALLY WANT TO PLAY TEKKIT AND VOLTZ.

Error Messages:

N/A

Error Log:

2013/03/17 20:35:00 [iNFO] ------------------------------------------

2013/03/17 20:35:00 [iNFO] Technic Launcher is starting....

2013/03/17 20:35:00 [iNFO] Launcher Build: 203

2013/03/17 20:35:00 [iNFO] ------------ Startup Parameters ------------

2013/03/17 20:35:00 [iNFO] --------- End of Startup Parameters ---------

2013/03/17 20:35:03 [iNFO] Starting download of http://mirror.technicpack.net/Technic/tekkitlite/resources/background.jpg, with 3 tries remaining

2013/03/17 20:35:06 [iNFO] Starting download of http://mirror.technicpack.net/Technic/tekkitlite/resources/icon.png, with 3 tries remaining

2013/03/17 20:35:06 [iNFO] Starting download of http://mirror.technicpack.net/Technic/tekkitlite/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:07 [iNFO] Starting download of http://mirror.technicpack.net/Technic/tekkit/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:09 [iNFO] Starting download of http://mirror.technicpack.net/Technic/voltz/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:10 [iNFO] Starting download of http://mirror.technicpack.net/Technic/yogbox/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:12 [iNFO] Starting download of http://mirror.technicpack.net/Technic/hackslashmine/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:14 [iNFO] Starting download of http://mirror.technicpack.net/Technic/vanilla/resources/logo_180.png, with 3 tries remaining

2013/03/17 20:35:16 [iNFO] Launcher took: 15665ms to start

2013/03/17 20:35:29 [iNFO] Starting download of http://mirror.technicpack.net/Technic/vanilla/resources/background.jpg, with 3 tries remaining

2013/03/17 20:35:31 [iNFO] Starting download of http://mirror.technicpack.net/Technic/vanilla/resources/icon.png, with 3 tries remaining

2013/03/17 20:35:53 [iNFO] Mod pack Build: 1.4.7 Minecraft Version: 1.4.7

2013/03/17 20:35:53 [iNFO] Starting download of minecraft, with 3 tries remaining

2013/03/17 20:37:00 [iNFO] Expected MD5: 8e80fb01b321c6b3c7efca397a3eea35 Result MD5: 8e80fb01b321c6b3c7efca397a3eea35