imVelocity

I have never had this error before. I loaded up DayZ (Through Steam) then I got this error message. (Shown below) I have tried restarting my pc, but didn't work. Could i please have help. Thanks.

Hello there. First of all I was able to play DayZ fine last night and before then. But I came home today to discover that when I load up DayZ I get an error message saying "Fatal Application Exit", then in the box there's 'memory.c - !IsBadReadPtr(InPtr, InSize)' Can someone please help as I am unable to play. Thank You :)