Cannot launch Minecraft without a crash and an error report.

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
Launch Minecraft 1.8.5 normally with no problems.
What actually happened was...:
Describe what happened here
The launcher crashed and it loaded an error report.
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...Launch the Minecraft 1.6.11 launcher.
3. ...Press play then crashes and error report appears.