Lovely. Well either the game hasn't installed properly or something related to the game is malfunctioning. Sorry that I can't be any more help than this.

Welp, try showing that event report to the support they might be able to help.

Google "how to disable data execution prevention" on your OS.

Hey,

Have you tried checking the windows event viewer, it might tell you whats going wrong.

Damn, unexpected. Try restoring the dll, if you haven't already.
Also it looks like there might be a problem with BEX; try disabling DEP for Arma 3?