Basicly, I can do Multiplayer servers, and Options. When i try to open or create a World, I get this crash/bug report. I tried using many different users and versions, and the same thing. Do i need to re download Minecraft?

Basicly, I can do Multiplayer servers, and Options. Thats it. When i try to open or create a World, I get this crash/bug report. I tried using many different users, different versions, and the same thing. Do i need to re download Minecraft? Or will i need to wait for an update?

What I expected to happen was...:
The world should have opened as normal

What actually happened was...:
The game crashed or make a completely blank world.

Steps to Reproduce:
1. Open minecraft (Any Version)
2. Go into Single player
3. Create a world (If 1.8, sometimes it makes a world of nothing. if 1.7.10, Crash.)