Summary
Editor crashes when opening an assembled metahuman, created using metahuman creator in ue 5.7, after migration.
Frequently crashes when opening the non-assemble version after migration from ue 5.7.
What Type of Bug are you experiencing?
Other
Steps to Reproduce
(A) NON-ASSEMBLED METAHUMAN
1 - Open UE 5.7.
2 - Create a new metahuman character.
3 - Import and conform metahuman character with custom body and head (human and non-stylised) purchased from FAB.com.
4 - Overwrite with custom texture, including underwear mask.
5 - Add hair, eyebrows, makeup, etc.
6 - Save and migrate to UE 5.8.
7 - Open UE 5.8.
8 - Open the metahuman file.
(B) ASSEMBLED METAHUMAN
1 - Follow Step 1-5
2 - Create rig and assemble.
3 - Migrate to UE 5.8.
4 - Open UE 5.8.
5 - Drag and drop the metahuman blueprint to the viewport.
Expected Result
(A) NON-ASSEMBLED METAHUMAN
- Metahuman creator open and function without crashing.
(B) ASSEMBLED METAHUMAN
- Editor function without crashing.
Observed Result
(A) NON-ASSEMBLED METAHUMAN
- Metahuman creator crashed upon opening.
(B) ASSEMBLED METAHUMAN
- Editor crashed upon placing the metahuman blueprint.
Affects Versions
5.8
Platform(s)
Mac
For crash reports, include your callstack
Fatal error: [File:./Runtime/Apple/MetalRHI/Private/Shaders/Types/Templates/MetalBaseShader.h] [Line: 508]
*********** Error
Hash: 0000000000000000, Name: MaterialAHS_000bcf10_28540ec1
0x578bf820 libUnrealEditor-MetalRHI.dylib!TMetalBaseShader<FRHIRayHitGroupShader, 8>::GetCompiledFunction(bool, int, bool)::‘lambda’(MTL::Function*, NS::Error*)::operator()(MTL::Function*, NS::Error*) const [UnknownFile])
0x578bd224 libUnrealEditor-MetalRHI.dylib!invocation function for block in MTL::Library::newFunction(MTL::FunctionDescriptor const*, std::__1::function<void (MTL::Function*, NS::Error*)> const&) [UnknownFile])
0x578bf260 libUnrealEditor-MetalRHI.dylib!TMetalBaseShader<FRHIRayHitGroupShader, 8>::GetCompiledFunction(bool, int, bool) [UnknownFile])
0x579520e8 libUnrealEditor-MetalRHI.dylib!TMetalBaseShader<FRHIRayHitGroupShader, 8>::Init(FRHICreateShaderDesc const&, FMetalCodeHeader&, NS::SharedPtrMTL::Library, bool, bool) [UnknownFile])
0x57951660 libUnrealEditor-MetalRHI.dylib!FMetalBaseRayShader<FRHIRayHitGroupShader, 8>::FMetalBaseRayShader(FMetalDevice&, FRHICreateShaderDesc const&, NS::SharedPtrMTL::Library, IRShaderStage, FString&, bool, bool) [UnknownFile])
0x5793e19c libUnrealEditor-MetalRHI.dylib!FMetalRayShader::FMetalRayShader(FMetalDevice&, FRHICreateShaderDesc const&, EShaderFrequency, NS::SharedPtrMTL::Library) [UnknownFile])
0x57897630 libUnrealEditor-MetalRHI.dylib!FMetalDynamicRHI::RHICreateRayTracingShader(FRHICreateShaderDesc const&, EShaderFrequency) [UnknownFile])
0x0420c714 libUnrealEditor-RenderCore.dylib!FShaderMapResource_InlineCode::CreateRHIShaderOrCrash(int, bool) [UnknownFile])
0x0420b518 libUnrealEditor-RenderCore.dylib!FShaderMapResource::CreateShaderOrCrash(int, bool) [UnknownFile])
0x254f7ff8 libUnrealEditor-Renderer.dylib!FRayTracingMeshCommand::SetShader(TShaderRefBase<FShader, FShaderMapPointerTable> const&) [UnknownFile])
0x254f46a4 libUnrealEditor-Renderer.dylib!void FRayTracingMeshProcessor::BuildRayTracingMeshCommands<FMaterialCHS, TBasePassShaderElementData>(FMeshBatch const&, unsigned long long, FPrimitiveSceneProxy const*, FMaterialRenderProxy const&, FMaterial const&, TShaderRefBase<FMaterialCHS, FShaderMapPointerTable> const&, TBasePassShaderElementData const&) [UnknownFile])
0x254f4130 libUnrealEditor-Renderer.dylib!FRayTracingMeshProcessor::Process(FMeshBatch const&, unsigned long long, FPrimitiveSceneProxy const*, FMaterialRenderProxy const&, FMaterial const&, FUniformLightMapPolicy const&) [UnknownFile])
0x254f53d0 libUnrealEditor-Renderer.dylib!FRayTracingMeshProcessor::TryAddMeshBatch(FMeshBatch const&, unsigned long long, FPrimitiveSceneProxy const*, int, FMaterialRenderProxy const&, FMaterial const&) [UnknownFile])
0x254f510c libUnrealEditor-Renderer.dylib!FRayTracingMeshProcessor::AddMeshBatch(FMeshBatch const&, unsigned long long, FPrimitiveSceneProxy const*) [UnknownFile])
0x254b8be0 libUnrealEditor-Renderer.dylib!UE::Tasks::Private::TExecutableTaskBase<RayTracing::DispatchRayTracingMeshBatchTask(TConcurrentLinearBulkObjectAllocator&, FScene&, FViewInfo&, RayTracing::FRayTracingMeshBatchTaskPage*, unsigned int)::$_0, void, void>::ExecuteTask() [UnknownFile])
0x2467b7b0 libUnrealEditor-Renderer.dylib!UE::Tasks::Private::FTaskBase::TryExecuteTask() [UnknownFile])
0x24694680 libUnrealEditor-Renderer.dylib!LowLevelTasks::TTaskDelegate<LowLevelTasks::FTask* (bool), 112u>::TTaskDelegateImpl<void LowLevelTasks::FTask::Init<UE::Tasks::Private::FTaskBase::Init(char16_t const*, LowLevelTasks::ETaskPriority, UE::Tasks::EExtendedTaskPriority, UE::Tasks::ETaskFlags)::‘lambda’()>(char16_t const*, LowLevelTasks::ETaskPriority, UE::Tasks::Private::FTaskBase::Init(char16_t const*, LowLevelTasks::ETaskPriority, UE::Tasks::EExtendedTaskPriority, UE::Tasks::ETaskFlags)::‘lambda’()&&, LowLevelTasks::ETaskFlags)::‘lambda’(bool), false>::CallAndMove(LowLevelTasks::TTaskDelegate<LowLevelTasks::FTask* (bool), 112u>&, void*, unsigned int, bool) [UnknownFile])
0x06687474 libUnrealEditor-Core.dylib!LowLevelTasks::FTask::ExecuteTask() [UnknownFile])
0x0666a854 libUnrealEditor-Core.dylib!LowLevelTasks::FScheduler::ExecuteTask(LowLevelTasks::FTask*) [UnknownFile])
0x0666c24c libUnrealEditor-Core.dylib!LowLevelTasks::FScheduler::WorkerLoop(LowLevelTasks::Private::FWaitEvent*, LowLevelTasks::Private::TLocalQueueRegistry<1024u, 1024u>::TLocalQueue*, unsigned int, bool) [UnknownFile])
0x0666cb90 libUnrealEditor-Core.dylib!LowLevelTasks::FScheduler::WorkerMain(LowLevelTasks::Private::FWaitEvent*, LowLevelTasks::Private::TLocalQueueRegistry<1024u, 1024u>::TLocalQueue*, unsigned int, bool) [UnknownFile])
0x06955e88 libUnrealEditor-Core.dylib!FThreadImpl::Run() [UnknownFile])
0x069237b4 libUnrealEditor-Core.dylib!FRunnableThreadPThread::Run() [UnknownFile])
0x06872e44 libUnrealEditor-Core.dylib!FRunnableThreadPThread::_ThreadProc(void*) [UnknownFile])
0x89449c58 libsystem_pthread.dylib!_pthread_start() [UnknownFile])
0x89444c1c libsystem_pthread.dylib!thread_start() [UnknownFile])