Can't change graphic settings

Hello,

i downloaded 3.3.5a from several websites, because at first i thought that the client is broken or something missing.
But everytime i want to change the graphic settings, either in the start menu or ingame, the game tries to apply the changes and crashes.
My hardware should not be the problem i hope, but i don't really know.
I run the game as admin.
Could it have something to do with me having two monitors? One is 144Hz the other only 60Hz.

I got:
I7 6700k
Nvidia 1070
16GB DDR4 RAM