Board Thread:Bug Reports/@comment-71.235.129.38-20150706161803/@comment-27723099-20150706164950

After Minecraft has crashed, the launcher should appear again and display the crash report.

Alternatively go to your .minecraft folder and you can find the crash report in the folder /crash-reports. Take the last one if there is more than one.

If you have the crash report, just copy it and post it here.