Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Assertion failed: TaskDataArray.Num() == Exporter->VolumetricLightmapTaskGuids.Num()
UE - Graphics Features - Lumen - Oct 2, 2017This is a trending crash coming out of the 4.18 Previews. Users have not provided any descriptions of their actions when the crash occurred, but at least two of the affected projects are being creat ...
[CrashReport] UE4Editor-MetalShaderFormat.dylib!FGenerateMetalVisitor::print_constant()
UE - Graphics Features - Sep 22, 2017This is an early trending crash coming out of the 4.18 previews. It occurs on Mac, and all affected project names indicate it is related to AR. Users have not provided any descriptions of their ac ...
[CrashReport] Linux crash - FScopeContext::FScopeContext()
UE - Platform - Linux - Oct 5, 2017This is a somewhat common Linux crash occurring in 4.17.2. (there are a few older records in 4.16.2 and 4.17.1 also, but most occur in 4.17.2) Callstack from Log[2017.10.04-14.49.42:768][ 2]LogFi ...
[CrashReport] UE4Editor-MetalRHI.dylib!FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState()
UE - Graphics Features - Jun 29, 2017This is a common crash affecting Mac users in the 4.16 release. Mark.S: "one of the visualisation shaders is setting up bogus render state" Callstack from LogLogActorFactory: Actor Factory create ...
[CrashReport] Mac crash - UE4Editor-Slate.dylib!SMenuAnchor::SetIsOpen()
UE - Platform - Apple - Sep 14, 2017This is a common and longstanding Mac crash that has occurred since at least 4.11 and affected more than 40 users. Users have not provided any descriptions of their actions when the crash occurred ...
When ParallelExecutor is enabled, Japanese build output of VisualStudio garbled
UE - Foundation - Cpp Tools - Sep 19, 2018From UE4.20, Japanese build output of VisualStudio garbled. Below is a comparison between 4.19 and 4.20. ・4.19.2 1>------ すべてのリビルド開始: プロジェクト:MyProject3, 構成:Development_Editor x64 ------ 1> Clea ...
[CrashReport] Crash on FMaterialEditor::OnCanPromoteToParameter()
UE - Rendering Architecture - Materials - Jun 22, 2017This is a common crash in the 4.16 release (affecting Windows and Mac). A log file is attached. Users have not provided descriptions so additional information is not currently available. Windows C ...
Xcode 26/16.4 Metal Toolchain generates metallib's that are not compatible with iOS 16
UE - Platform - Apple - Sep 23, 2025Below is the error output from FirstPerson template as a C++ project: {+}../../../FirstPerson58CPP/Content/firstperson58cpp_sf_metal_es3_1_ios-metal_es3_1_ios.0.metallib, 5881486 bytes!2025-09-23 1 ...
[CrashReport] Linux crash - FMonitoredProcess::Launch()
UE - Platform - Linux - Sep 14, 2017This is an infrequent Linux crash occurring in 4.17.1. Callstack from Log[2017.09.06-15.26.30:028][666]LogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/***/.local/ ...
[CrashReport] Crash CheckForWorldGCLeaks() - EditorDestroyWorld()
UE - AI - Sep 8, 2017This is a somewhat common but longstanding Mac crash that has affected users since at least 4.13. Recently in 4.17.1, the crashes are all occurring in various ARKit projects User DescriptionsI add ...