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.
SEGV_MAPERR at 0x3
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