When I first load up minecraft it works fine but when i click play it takes me to the crash report and i can not understand what is wrong. Please can you help fix the problem.

Put the summary of the bug you're having here
When I first load up minecraft it works fine but when i click play it takes me to the crash report and i can not understand what is wrong. Please can you help fix the problem.
*What I expected to happen was you were to fix the problem and i could play minecraft.

Put a step by step guide on how to trigger the bug here
1. ...Run mincraft.
2. ...when the page loads up click play then it will load the crash report.