We need 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

http://www.multiupload.nl/3BFE53RPQA

Reproducibility: Random
How often did you have this crash with this repro steps? Thank you for info.

Maybe when 30s, maybe when 3-5 min. I like choosing weapons long time :P

Ok and do you have this crash always, when you are in ammo box for a longer time?

Yes, in each box, most often with weapons and equipment. With them the longest sitting.

Sorry for my bad English :P

I've had same issue and found that you can Alt Tab out of the game and when you return everything is ok

Where do you get this behaviour? In single or multiplayer? And is this task still reproducable?

Closing due to lack of info/response.

If this issue is still reproducable for you, please create a new ticket for it and be sure to include all necessary info/files.