pancakes, why not tell us what kind of computer you are running... how fast is the CPU and how much memory and what graphics card and stuff like that so we can better explain to you possibly why it isn't working. and so we can make fun of your computer.

Actually it does seem to be happening less in 0.42. Good to see he's working on bugs like this.

i've had this crash once as well in 0.42, while falling down a hole looking down and spinning the mouse left and up at the same time
overflow? Floating Point Exception?

He didnt. It got worse for me in .42

When I lower the DPI of my mouse in my mouse's configuration utility it doesn't seem to crash. So it's probably an issue with fast movements in the game.

looks like he fixed this in .42

What is your computer spec?

I spent five minutes whipping my mouse around. No crashes, just a lot of motion sickness.

this has never happened to me. maybe its your computer.

Whenever I turn around really quickly by moving the mouse fast it causes the whole game to freeze and I have to close it in task manager. Might want to look into it.