Q&A section/ server setup=
ERROR: "Instruction at X referenced memory at 0x000000XX. The memory could not be read."
SOLUTION 1: Go into .\Steam\Steamapps\Common\ARMA 2\DirectX\ and run DXSETUP.exe to install/update DirectX and its components.
SOLUTION 2: Go into .\Steam\Steamapps\Common\ARMA 2\BEsetup\ and run setup_BattlEyeARMA2.exe to install/update BattlEye and its components.
SOLUTION 3: Reboot your computer after completing the two above solutions.
WHY: Because something is either corrupted or not up to date.
It would help if giving an option, like would you like to change from silver to gold etc. Other wise you can get left with about 20 brief cases of silver which takes room.