I might add that this is multiplayer wasteland mission.

We need dxdiag and files from this folder for solve your problem. C:\Users\<Name>\AppData\Local\Arma 3 Alpha\

Can you upload somewhere in winrar package please?
When package will be smaller than 5,000k, so you can attach here. Thank you.

http://feedback.arma3.com/how-to-user.html.html

Ticket closed due to lack of information or response. If the issue is still valid, please create a new one including the required files listed in the how-to-guide (red button, top right) under "How to report a crash".