If this is referring to the memory error everyone gets, your best bet is to try playing is 64x mode, as it allows your PC to use more memory for DayZ.
Some people have less crashes in 32x, some have less in 64x.
When you go to play dayz, right-click on the play button in your library. It will give you the option between 32bit and 64bit.

If you already knew this, I’m sorry. I’ve had several people on teamspeak complain about crashes, and found out they had no idea this was an option. It won’t stop memory crashes completely (.63 is supposed to have crushed this bug), but choosing the right bit to run in can make your game more stable.