4.17 won't open/load files on Mac

Unreal works fine on 4.11.2 but crashes on 4.17.0 reporting that multiple file names aren’t found. It gets to about 94% and then crashes. Doesn’t matter if file is new or old. Here is the bug report from the error.


FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10c3cfc9b (filename not found) [in UE4Editor-Core.dylib]
FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x10c5e725f (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::Logf(wchar_t const*, ...) Address = 0x10c6cd94d (filename not found) [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x10c62081e (filename not found) [in UE4Editor-Core.dylib]
FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState(FMetalBoundShaderState*, FMetalHashedVertexDescriptor const&) const Address = 0x14888651a (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalBoundShaderState::PrepareToDraw(FMetalHashedVertexDescriptor const&, FMetalRenderPipelineDesc const&) Address = 0x148851c92 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalContext::PrepareToDraw(unsigned int, EMetalIndexType) Address = 0x14884ba28 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalRHICommandContext::RHIEndDrawPrimitiveUP() Address = 0x148831408 (filename not found) [in UE4Editor-MetalRHI.dylib]
DrawPrimitiveUP(FRHICommandList&, unsigned int, unsigned int, void const*, unsigned int) Address = 0x11da25db9 (filename not found) [in UE4Editor-Renderer.dylib]
FProjectedShadowInfo::RenderProjection(FRHICommandListImmediate&, int, FViewInfo const*, bool, bool) const Address = 0x11e181ef7 (filename not found) [in UE4Editor-Renderer.dylib]
FSceneRenderer::RenderShadowProjections(FRHICommandListImmediate&, FLightSceneInfo const*, IPooledRenderTarget*, bool, bool) Address = 0x11e185cf4 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderShadowProjections(FRHICommandListImmediate&, FLightSceneInfo const*, IPooledRenderTarget*, bool&) Address = 0x11e186396 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderLights(FRHICommandListImmediate&) Address = 0x11db846c3 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::Render(FRHICommandListImmediate&) Address = 0x11da31a11 (filename not found) [in UE4Editor-Renderer.dylib]
FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand::DoTask(ENamedThreads::Type, TRefCountPtr const&) Address = 0x11e0bc3d0 (filename not found) [in UE4Editor-Renderer.dylib]
TGraphTask::ExecuteTask(TArray&, ENamedThreads::Type) Address = 0x11e120760 (filename not found) [in UE4Editor-Renderer.dylib]
FNamedTaskThread::ProcessTasksNamedThread(int, bool) Address = 0x10c3f31cf (filename not found) [in UE4Editor-Core.dylib]
FNamedTaskThread::ProcessTasksUntilQuit(int) Address = 0x10c3f21d8 (filename not found) [in UE4Editor-Core.dylib]
FTaskGraphImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) Address = 0x10c3edf61 (filename not found) [in UE4Editor-Core.dylib]
RenderingThreadMain(FEvent*) Address = 0x113379cb1 (filename not found) [in UE4Editor-RenderCore.dylib]
FRenderingThread::Run() Address = 0x11338f5d7 (filename not found) [in UE4Editor-RenderCore.dylib]
FRunnableThreadPThread::Run() Address = 0x10c471c90 (filename not found) [in UE4Editor-Core.dylib]
FRunnableThreadPThread::_ThreadProc(void*) Address = 0x10c413b80 (filename not found) [in UE4Editor-Core.dylib]
_pthread_body Address = 0x7fffc1f0f93b (filename not found) [in libsystem_pthread.dylib]
_pthread_body Address = 0x7fffc1f0f887 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fffc1f0f08d (filename not found) [in libsystem_pthread.dylib]

Macbook Pro
Version: 10.12.6 Sierra.
Processor: 2.6 GHz Intel Core i7
RAM: 16 GB
Graphics Card: Intel Iris Pro 1526MB and NVIDIA GeForce GT 750M

Hi AnnoyingDoggo,

This issue has been addressed in this post. Please see if the workaround mentioned there helps with the crash that you are experiencing.