Hello,
Thank you for reporting the issue.
We need crash dump files from this folder for solve your problem.
C:\Users\<Name>\AppData\Local\Arma 3\
Can you upload somewhere in winrar package please?
When package will be smaller than 5000k, you can attach it here. When package is bigger, please use some free sharing service and post link here.

How to find correct crashdump file:
Try to make the crash happen
Look into crashdump folder
Upload crashdump with latest date in name (crashdump is rpt + bidmp + mdmp file with same name)

Thank you.

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

Faulting application name: arma3.exe, version: 1.18.124.97, time stamp: 0x5360ee05
Faulting module name: arma3.exe, version: 1.18.124.97, time stamp: 0x5360ee05
Exception code: 0xc0000005
Fault offset: 0x00da0f47
Faulting process id: 0x1708
Faulting application start time: 0x01cf659829d01599
Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
Faulting module path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
Report Id: db48f906-d18d-11e3-bc1a-001fbc0db966

Still happening and getting quite annoying as this is my only game that I play quite religiously.

Hello,

our programmers took a look at the crashdumps but couldn't find any useful data. Could you please try to upload at least three or four of them (3x: rpt + bidmp + mdmp file with same name)? It would help us a lot.

Thank you.

Hi, will you be adding more dumps?

Two days until resolving as expired (hotfix applied in the meantime).

Yes I actually had not crashed in a couple of days but it began again. Two times in the past 24 hours. I will add the crash dumps.
Faulting application name: arma3.exe, version: 1.18.124.200, time stamp: 0x53682789
Faulting module name: arma3.exe, version: 1.18.124.200, time stamp: 0x53682789
Exception code: 0xc00000fd
Fault offset: 0x00da0fa7
Faulting process id: 0xf2c
Faulting application start time: 0x01cf7478359e4a43
Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
Faulting module path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe

Error 2
Faulting application name: arma3.exe, version: 1.18.124.200, time stamp: 0x53682789
Faulting module name: arma3.exe, version: 1.18.124.200, time stamp: 0x53682789
Exception code: 0xc00000fd
Fault offset: 0x00da0fa7
Faulting process id: 0x1708
Faulting application start time: 0x01cf72c09e0fb7bc
Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
Faulting module path: C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
Report Id: c542abcf-debf-11e3-aacc-001fbc0db966

Hello,
there are no crsahdumps included, only one rpt.
(crashdump is rpt + bidmp + mdmp file with same name)

Hello, are these crashes happening on current 1.20 version?

Considered fixed in two days.

Closing. If the problem appears again, please create another ticket.
Thank you.