shows a screen flashing and you cant see icons in pause menu.

screen flashes and show white and missing pictures, even esc. menu is hard to be seen

What I expected to happen was...:
Since there was a 1.6.2 update, i expected normal gameplay

What actually happened was...:
The screen flashed white in some areas, and when i pressed escape, the start menu was difficult to see, i looked at the launcher, it said something like mapping 0x... validated,and the line below it said mapping bo0x...cant be validated, and it kept repeating until i closed it

Steps to Reproduce:
1. log in
2. click single player
3. play any world you want(creative or survival)