I click play and after it finished loaded, it showed a minecraft crash report

Put the summary of the bug you're having here

What I expected to happen was...
it would load up Mine Craft correctly without any problems

What actually happened was...
it showed a mine craft crash report on the screen

Steps to Reproduce:
1. double-click on your mine craft icon on your screen
2. select play
3. wait for it to close and the crash report will pop-up