Put the summary of the bug you're having here

What I expected to happen was...:
Do it start the game, like the last time!

What actually happened was...:
It's not starting and send me back to Report/Crash window. Yesterday (06/23) I played it whithout bugs! I bought it (I PAYED FOR IT $$$) and I SHOULD HAVE IT WORKING!

Steps to Reproduce:
1. Duble-click on Minecraft icon;
2. I waited appear the Minecraft Launcher 1.6.61 window;
3. OK, I clicked on PLAY button;
4. MOJANG window starts (1.10.2).
5. Minecraft menu appeared!
6. I clicked on SINGLEPLAYER button.
7. I chose my map and clicked on Play Selected World
8. OK, the "Loading World - Building terrain" appears!
9. HERE IS IT - The MInecraft didn't start and I was turn back to CRASH REPORT WINDOW! (sounds like this mesage: "Uhoh, something went wrong!"
10. And... My jaw dropped!!!! ('cause everyday I play it.... it's my therapy!)