Good day,   Two member of my Unit have issues with Arma.   They have random Crash to Desktops while in the mission without getting any error message.   Here is a RPT from last Sunday. The same errors occured ever since 1.54 also.   Full link:   Just the end: ======================================================= ------------------------------------------------------- Exception code: C0000005 ACCESS_VIOLATION at 77BA6BEF graphics: D3D11, Device: NVIDIA GeForce GTX 970 resolution: 1920x1080x32 Addons: Lots and lots of -> See Full link Distribution: 0 Version 1.56.134787 Fault time: 2016/04/10 16:30:42 Fault address: 77BA6BEF 01:00035BEF C:\WINDOWS\SYSTEM32\ntdll.dll file: 75th_RR_Official_OP_07-16_TFB (__CUR_MP) world: reshmaan Prev. code bytes: D2 0F 85 47 D4 05 00 C1 EA 0D 8B C8 2B CA 8B 09 Fault code bytes: 66 8B 49 14 8A 50 07 0F B7 F9 80 FA 05 0F 84 32 Registers: EAX:ACA8A640 EBX:00000000 ECX:00000000 EDX:CB681BF0 ESI:00C90000 EDI:FFFFFFFF CS:EIP:0023:77BA6BEF SS:ESP:002B:00BFAF08 EBP:00BFAF1C DS:002B ES:002B FS:0053 GS:002B Flags:00010246 ======================================================= note: Minidump has been generated into the file C:\Users\Derek\AppData\Local\Arma 3\arma3_2016-04-10_13-16-46.mdmp Here is  the link for the Minidump.   Does anybody have a clue what could be the cause for this?   Thanks   Best regards