Put the summary of the bug you're having here
What I expected to happen was...:
Minercraft would open up, showing the mojang logo and I could play.
What actually happened was...:
Instant crash, not even having time to show the MOJANG logo.
Steps to Reproduce:
1. Put username/password and other information on required fields
2. Click Play
3. Minecraft crashes.
This is the error report.