Put the summary of the bug you're having here
What I expected to happen was...:
Minecraft to Launch and get to the splash screen
What actually happened was...:
The Mojang screen comes up for a second and then the game fails.
Steps to Reproduce:
1. Open the Launcher
2. Choose the Profile you want
3. Hit Play
Environment
OS: Windows 8 (ver 6.2, arch amd64)
Java: 1.7.0_09 (by Oracle Corporation)
Launcher: 1.2.5 (bootstrap 5)
Minecraft: 1.6.4 (updated Thu Sep 19 08:52:37 PDT 2013)
Duplicate of MC-15564