I haven't played DayZ for a long time, but my today's try was a crash party.
I played the 2 exp build you had today and the stable 0.61 version, with the same crash type. Not sure if the 0x0..52E5B3 address was always the same, but the error type was.
It always happens while i'm using the inventory. Sometine as soon i press TAP, sometime when i use a item in some way. It never happened while running or shooting or whatever. Only in combination with the inventory.
I dont think I played longer than 20mins without a crash. It felt like I it crashes easier after I looted quite some stuff that you get in the first 30 mins.
All around I had maybe 12 crashes. Disabled fraps, updated some drivers closed the most stuff running.