Crash Report When Loading 13w47c

Put the summary of the bug you're having here

What I expected to happen was...:
Launcher close, Minecraft window open, Mojang logo, title screen and I play Minecraft

What actually happened was...:
Launcher closed, Minecraft window open, and closed before the Mojang logo appeared and I got a crash report

Steps to Reproduce:
1. Open launcher
2. Play version 13w47c
3. Watch and wait for the crash