I have experienced the same issue yesterday. (Have relaunched the game multiple times since) I have uploaded a ZIP containing the C:\Users\--\AppData\Local\DayZ files and a DxDiag.txt document!
https://mega.co.nz/#!yAsjUKxI!NzPxeyy90DIlu1OuFqRXxxn-3zRSEbDeOMWoUngCSYA