[CrashReport] Mac crash - FShaderCompilingManager::ProcessCompiledShaderMaps()

[2017.11.16-11.10.48:274][  0]LogMac: Error: appError called: Assertion failed:  [File:/Users/build/Build/++UE4+Release-4.18+Compile/Sync/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp] [Line: 1827] 
Failed to compile default material /Engine/EngineMaterials/WorldGridMaterial.WorldGridMaterial!

[2017.11.16-11.10.48:391][  0]LogMac: === Critical error: ===
SIGSEGV: invalid attempt to access memory at address 0x3

[2017.11.16-11.10.48:391][  0]LogMac: 0x046ea99b UE4Editor-Core.dylib!FGenericPlatformMisc::RaiseException(unsigned int)   [UnknownFile]) 
0x0a1f0c09 UE4Editor-ApplicationCore.dylib!FMacErrorOutputDevice::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&)   [UnknownFile]) 
0x04998c9d UE4Editor-Core.dylib!FOutputDevice::Logf(wchar_t const*, ...)   [UnknownFile]) 
0x0490eefb UE4Editor-Core.dylib!FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...)   [UnknownFile]) 
0x06f48562 UE4Editor-Engine.dylib!FShaderCompilingManager::ProcessCompiledShaderMaps(TMap<int, FShaderMapFinalizeResults, FDefaultSetAllocator, TDefaultMapHashableKeyFuncs<int, FShaderMapFinalizeResults, false> >&, float)   [UnknownFile]) 
0x06f4fdb6 UE4Editor-Engine.dylib!FShaderCompilingManager::FinishCompilation(wchar_t const*, TArray<int, FDefaultAllocator> const&)   [UnknownFile]) 
0x069b236c UE4Editor-Engine.dylib!FMaterialShaderMap::Compile(FMaterial*, FMaterialShaderMapId const&, TRefCountPtr<FShaderCompilerEnvironment>, FMaterialCompilationOutput const&, EShaderPlatform, bool, bool)   [UnknownFile]) 
0x069cff1b UE4Editor-Engine.dylib!FMaterial::BeginCompileShaderMap(FMaterialShaderMapId const&, EShaderPlatform, TRefCountPtr<FMaterialShaderMap>&, bool)   [UnknownFile]) 
0x069cf377 UE4Editor-Engine.dylib!FMaterial::CacheShaders(FMaterialShaderMapId const&, EShaderPlatform, bool)   [UnknownFile]) 
0x069cef76 UE4Editor-Engine.dylib!FMaterial::CacheShaders(EShaderPlatform, bool)   [UnknownFile]) 
0x068939b6 UE4Editor-Engine.dylib!UMaterial::CacheShadersForResources(EShaderPlatform, TArray<FMaterialResource*, FDefaultAllocator> const&, bool)   [UnknownFile]) 
0x0688c2b3 UE4Editor-Engine.dylib!UMaterial::CacheResourceShadersForRendering(bool)   [UnknownFile]) 
0x06897f08 UE4Editor-Engine.dylib!UMaterial::PostLoad()   [UnknownFile]) 
0x0552e904 UE4Editor-CoreUObject.dylib!UObject::ConditionalPostLoad()   [UnknownFile]) 
0x0688343f UE4Editor-Engine.dylib!UMaterialInterface::PostLoadDefaultMaterials()   [UnknownFile]) 
0x06994084 UE4Editor-Engine.dylib!UMaterialInterface::PostLoad()   [UnknownFile]) 
0x06896d7a UE4Editor-Engine.dylib!UMaterial::PostLoad()   [UnknownFile]) 
0x0552e904 UE4Editor-CoreUObject.dylib!UObject::ConditionalPostLoad()   [UnknownFile]) 
0x056eed18 UE4Editor-CoreUObject.dylib!EndLoad()   [UnknownFile]) 
0x056ed43a UE4Editor-CoreUObject.dylib!LoadPackageInternal(UPackage*, wchar_t const*, unsigned int, FLinkerLoad*)   [UnknownFile]) 
0x056ea3fb UE4Editor-CoreUObject.dylib!LoadPackage(UPackage*, wchar_t const*, unsigned int)   [UnknownFile]) 
0x056e6827 UE4Editor-CoreUObject.dylib!ResolveName(UObject*&, FString&, bool, bool, unsigned int)   [UnknownFile]) 
0x056eabd8 UE4Editor-CoreUObject.dylib!StaticLoadObjectInternal(UClass*, UObject*, wchar_t const*, wchar_t const*, unsigned int, UPackageMap*, bool)   [UnknownFile]) 
0x056e54f8 UE4Editor-CoreUObject.dylib!StaticLoadObject(UClass*, UObject*, wchar_t const*, wchar_t const*, unsigned int, UPackageMap*, bool)   [UnknownFile]) 
0x06123b2d UE4Editor-Engine.dylib!UStaticMesh* ConstructorHelpersInternal::FindOrLoadObject<UStaticMesh>(FString&)   [UnknownFile]) 
0x0612342d UE4Editor-Engine.dylib!ConstructorHelpers::FObjectFinder<UStaticMesh>::FObjectFinder(wchar_t const*)   [UnknownFile]) 
0x060cbe86 UE4Editor-Engine.dylib!UCameraComponent::UCameraComponent(FObjectInitializer const&)   [UnknownFile]) 
0x05417684 UE4Editor-CoreUObject.dylib!UClass::CreateDefaultObject()   [UnknownFile]) 
0x05708f71 UE4Editor-CoreUObject.dylib!FObjectInitializer::CreateDefaultSubobject(UObject*, FName, UClass*, UClass*, bool, bool, bool) const   [UnknownFile]) 
0x0552307d UE4Editor-CoreUObject.dylib!UObject::CreateDefaultSubobject(FName, UClass*, UClass*, bool, bool, bool)   [UnknownFile]) 
0x060c6d3b UE4Editor-Engine.dylib!ACameraActor::ACameraActor(FObjectInitializer const&)   [UnknownFile]) 
0x05417684 UE4Editor-CoreUObject.dylib!UClass::CreateDefaultObject()   [UnknownFile]) 
0x056d42ac UE4Editor-CoreUObject.dylib!ProcessNewlyLoadedUObjects()   [UnknownFile]) 
0x041f5a22 UE4Editor!FEngineLoop::PreInit(wchar_t const*)   [UnknownFile]) 
0x0420a491 UE4Editor!GuardedMain(wchar_t const*)   [UnknownFile]) 
0x04217e40 UE4Editor!-[UE4AppDelegate runGameThread:]   [UnknownFile]) 
0x04894d17 UE4Editor-Core.dylib!-[FCocoaGameThread main]   [UnknownFile]) 
0x53a506d8 Foundation!__NSThread__start__()   [UnknownFile]) 
0x791876c1 libsystem_pthread.dylib!_pthread_body()   [UnknownFile]) 
0x7918756d libsystem_pthread.dylib!_pthread_body()   [UnknownFile]) 
0x79186c5d libsystem_pthread.dylib!thread_start()   [UnknownFile]) 

UE4Editor-Engine.dylib!FShaderCompilingManager::ProcessCompiledShaderMaps()
UE4Editor-Engine.dylib!FShaderCompilingManager::FinishCompilation()
UE4Editor-Engine.dylib!FMaterialShaderMap::Compile()
UE4Editor-Engine.dylib!FMaterial::BeginCompileShaderMap()
UE4Editor-Engine.dylib!FMaterial::CacheShaders()
UE4Editor-Engine.dylib!FMaterial::CacheShaders()
UE4Editor-Engine.dylib!UMaterial::CacheShadersForResources()
UE4Editor-Engine.dylib!UMaterial::CacheResourceShadersForRendering()
UE4Editor-Engine.dylib!UMaterial::PostLoad()
UE4Editor-CoreUObject.dylib!UObject::ConditionalPostLoad()
UE4Editor-Engine.dylib!UMaterialInterface::PostLoadDefaultMaterials()
UE4Editor-Engine.dylib!UMaterialInterface::PostLoad()
UE4Editor-Engine.dylib!UMaterial::PostLoad()
UE4Editor-CoreUObject.dylib!UObject::ConditionalPostLoad()
UE4Editor-CoreUObject.dylib!EndLoad()
UE4Editor-CoreUObject.dylib!LoadPackageInternal()
UE4Editor-CoreUObject.dylib!LoadPackage()
UE4Editor-CoreUObject.dylib!ResolveName()
UE4Editor-CoreUObject.dylib!StaticLoadObjectInternal()
UE4Editor-CoreUObject.dylib!StaticLoadObject()
UE4Editor-Engine.dylib!UStaticMesh* ConstructorHelpersInternal::FindOrLoadObject<UStaticMesh>()
UE4Editor-Engine.dylib!ConstructorHelpers::FObjectFinder<UStaticMesh>::FObjectFinder()
UE4Editor-Engine.dylib!UCameraComponent::UCameraComponent()
UE4Editor-CoreUObject.dylib!UClass::CreateDefaultObject()
UE4Editor-CoreUObject.dylib!FObjectInitializer::CreateDefaultSubobject()
UE4Editor-CoreUObject.dylib!UObject::CreateDefaultSubobject()
UE4Editor-Engine.dylib!ACameraActor::ACameraActor()
UE4Editor-CoreUObject.dylib!UClass::CreateDefaultObject()
UE4Editor-CoreUObject.dylib!ProcessNewlyLoadedUObjects()
UE4Editor!FEngineLoop::PreInit()
UE4Editor!GuardedMain()
UE4Editor!<Unknown>
UE4Editor-Core.dylib!<Unknown>
Foundation!Unknown()
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>
libsystem_pthread.dylib!<Unknown>