forgot to include log here it is.
log last crash
I suppose the interesting part is in the end:
[2016.04.07-22.01.29:253][140]LogCrashTracker:
[2016.04.07-22.01.29:253][140]LogWindows:Error: === Critical error: ===
Assertion failed: Concurrency->MaxCount > 0 [File:D:\BuildFarm\buildmachine_++UE4+Release-4.11\Engine\Source\Runtime\Engine\Private\SoundConcurrency.cpp] [Line: 165]
[2016.04.07-22.01.29:320][140]LogExit: Executing StaticShutdownAfterError
[2016.04.07-22.01.29:342][140]LogPhysics:Warning: PHYSX: …..\PhysX\src\NpScene.cpp (2946) 8 : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2016.04.07-22.01.29:342][140]LogPhysics:Warning: PHYSX: …..\PhysX\src\NpScene.cpp (2946) 8 : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
[2016.04.07-22.01.29:343][140]LogPhysics:Warning: PHYSX: …..\PhysX\src\NpScene.cpp (2946) 8 : PxScene::unlockWrite() called without matching call to PxScene::lockWrite(), behaviour will be undefined.
etc…
2nd log is the crash