Hello,

please make sure that you are running the latest version of the game, that is 1.60

Now as for the crash, could you please upload your crashdumps here?
Crashdump (mdmp + rpt + bidmp) files should be located in this directory:
<drive>:\Users\<username>\AppData\Local\Arma 3
Once you have them, please ZIP them and drag and drop them into the comment text box.

Also some info about the crash, does it happen randomly or everytime. Does it happen after some time or after performing a certain action?

Any piece of info you are able to recollect and might seem relevant will help.

Thank you