I start DayZ x64 and after a few minutes the game crashes to desktop with the same error message but referencing a different memory address. This happens every time I play DayZ.
The instruction at 0x00d4f576 referenced memory at (insert variable memory location here - random/specific per crash). The memory could not be read.
Nothing in particular - I just fire up the x64 version and play on various servers I favorited and after a short period of time (anywhere from 10-30 minutes) the game crashes to desktop. The last crash I had occurred after corralling a horde of around 10-15 zombies outside in Elektro (my character was kaput after that). Other crashes occurred while I was in buildings looking for supplies or other normal scenarios. Servers were low-pop at the times of the crashes and always under 50-ping.
For reference, I do not have any Launch Options configured but did customize DayZ.cfg and username.DayZProfile but removed Read-only Attributes prior to starting the game when 0.61 was released to stable.