Update caves and cliffs made my game unplayable

I downloaded the new caves and cliffs update and when I tried to play the title screen was all glitchy and corrupted looking, i tried to go into my world and I was barley able to move around, I will upload some pictures I took to show what it looked like exaclty.

also my computer is a windows 7,core5,64bit, it can run minecraft just fine before the update as well as other games, also when i play other games it works just fine.