"Do you have same issue in latest stable build? "
Yes, this is in the latest stable build.
I can't test in dev version as it only happens in multiplayer (I can literally play all day on my own server without it crashing)

I am in favour of this. Current implementation is too simple and unsatisfying for both mortar gunner and MFC

Already running as Admin, makes no difference whatsoever.

It happens at completely random times for me, has nothing to do with server load or number of players

Problem signature:

Problem Event Name:	APPCRASH
Application Name:	arma3.exe
Application Version:	0.5.102.571
Application Timestamp:	512deb6a
Fault Module Name:	arma3.exe
Fault Module Version:	0.5.102.571
Fault Module Timestamp:	512deb6a
Exception Code:	c0000005
Exception Offset:	00900f8a
OS Version:	6.1.7601.2.1.0.256.48
Locale ID:	2057
Additional Information 1:	0a9e
Additional Information 2:	0a9e372d3b4ad19135b953a78882e789
Additional Information 3:	0a9e
Additional Information 4:	0a9e372d3b4ad19135b953a78882e789

Confirmed on my machine as well

-1 Instagoat,
This is the single most important issue for making this into a proper infantry simulator. I don't care about animation problems.

Weapon Resting is absolutely vital to realistically using weapons

Yea mixing up stance and bipods is a bad idea. Shift and Space is a good option

One other thing; when it is implemented the soldier should rotate around the weapon rest point, not around their belt buckle- e.g. if a bipod is deployed aiming left and right should mean the character keeps the bipod where it is and moves around it. Similarly when deploying rifles in windows, this makes it so much more effective using cover without exposing yourself and is how it works IRL.

Absolutely vital to using weapons properly. Should already be in.