here is error log


[3270.20] ScriptWarning: Accessed None 'AbilityState'
XMBEffectUtilities LW2OperatorClass.Default__XMBEffectUtilities
Function LW2OperatorClass.XMBEffectUtilities:CheckTargetConditions:004E
[3270.21] ScriptWarning: Accessed array 'XComIdleAnimationStateMachine_20.CoverDirectionInfo' out of bounds (-1/4)
XComIdleAnimationStateMachine Plot_TWN_Mixed_LgObj_11_LW.TheWorld:PersistentLevel.XComIdleAnimationStateMachine_20
Function XComGame.XComIdleAnimationStateMachine:GetDesiredCoverState:030F
[3276.80] Log: Dumping name table: (7006752)
[3276.80] Log: Dumping name table: 0xdb900000 (7006752)
[3283.31] Critical: appError called: Assertion failed: Rendering thread exception:
[File:G:\BuildAgent\work\a78b974cadaf0436\branches\Shipping\XCOM2\Development\Src\Engine\Src\RenderingThread.cpp] [Line: 640]
Fatal error!

Address = 0x107d6eff (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10619c3b (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1070b03e (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1086ed47 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1084a2a5 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x108476df (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1084f096 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1083132d (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1037d688 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1037d849 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10201b06 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10204b7b (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x16072774 (filename not found) [in C:\WINDOWS\System32\KERNEL32.DLL]
Address = 0x18b70d61 (filename not found) [in C:\WINDOWS\SYSTEM32\ntdll.dll]
Address = 0x18b70d61 (filename not found) [in C:\WINDOWS\SYSTEM32\ntdll.dll]

Stack: Address = 0x101e54e5 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x1035df69 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10ad9855 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10ad9c83 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10ad3a7c (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10ad3b3a (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10adbdd3 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x10ff8da1 (filename not found) [in F:\ASteam\steamapps\common\XCOM 2\Binaries\Win64\XCom2.exe]
Address = 0x16072774 (filename not found) [in C:\WINDOWS\System32\KERNEL32.DLL]
Address = 0x18b70d61 (filename not found) [in C:\WINDOWS\SYSTEM32\ntdll.dll]
Address = 0x18b70d61 (filename not found) [in C:\WINDOWS\SYSTEM32\ntdll.dll]

[3283.31] Critical: Windows GetLastError: 뫥D D?된? (0)
[3283.31] Log: GIsGuarded is true
[3283.31] Exit: Exiting.
[3287.77] Log: Log file closed, 07/06/17 10:42:52

i guess it is provoked by some operator class script.

Can you check this error and fix?