Unreal Engine Issues
Unreal Engine Issues
Crash: Direct3DDevice->CreateBuffer failed at D3D11VertexBuffer.cpp with error E_INVALIDARG
UE - Graphics Features - Jul 6, 2017This is a common crash affecting users since at least the 4.14 release. It was previously associated with [Link Removed], however that has been marked as fixed. Source Context 221 void Veri ...
[CrashReport] UE4Editor_ClassViewer!TBaseMulticastDelegate<void>::RemoveDelegateInstance() [delegatesignatureimpl.inl:970]
Tools - Jul 14, 2017This is a common crash affecting users on Windows and Linux. It also appears related to an older Mac crash ([Link Removed]). Users have not provided any new descriptions. Source Context 959 ...
[CrashReport] UE4Editor_CoreUObject!FMemoryWriter::Serialize() [memorywriter.h:42]
UE - Foundation - Core - Jul 24, 2017This is a common cook crash affecting users in 4.16. It is possibly the same issue as described in [Link Removed] for past engine versions. Source Context 33 virtual void Serialize(void* ...
"REFLECTION CAPTURES NEED TO BE REBUILT" is displayed on a cooked game.
UE - Graphics Features - Lumen - Jul 29, 2020This issue occurs when streaming levels including reflection captures are displayed with delay. When it finishes loading assets, reflection capture textures are uploaded to the GPU. Then the leve ...
Data loss caused by C++ Child Actor Component when compiling Child BP
UE - Gameplay - Blueprint - Dec 22, 2016Having Child Actor Components that are set in code can cause data loss upon compiling the blueprint. In this particular scenario, there are two custom Actor classes involved, MainActor and SubActo ...
Landscape Shaders Unknown by Landscape Thumbnail: Add to AllowedShaderTypes or ExcludedShaderTypes
UE - LD & Modeling - Terrain - Landscape - Oct 12, 2017When packaging Elemental Demo and Vehicle Game for Linux from Windows, multiple Landscape Shader warnings are encountered complaining that the shader is unknown by the landscape thumbnail material a ...
Null Material Layers in Material Instances cause Opacity Mask and WPO to break on Nanite Meshes
UE - Rendering Architecture - Materials - Oct 31, 2024When a Material Instance is loaded that has a nullptr layer in StaticParametrs.Materiallayers. The Material Instance will create it's own CachedExpressionData but the ConnectedParameterMask will be ...
[CrashReport] FMaterialEditor::NotifyPostChange()
UE - Rendering Architecture - Materials - Aug 29, 2017This is a trending crash in the 4.17 release. Update: also trending in the 4.18 release User DescriptionsImporting new charactertogled lighting modes on shadersChanging attriubtes on a materialWa ...
Crash adding a C++ First Person feature pack to a project
UE - Foundation - Core - Oct 2, 2017Result: Crash while compiling modules for the projectFatal error: [File:d:\Builds\Release-4.18\Engine\Source\Runtime\CoreUObject\Private\Templates\Casts.cpp] [Line: 10] Cast of nullptr to Package fa ...
Crash launching ES31 app on Android
UE - Platform - Mobile - Apr 9, 2018This has occurred so far using ES31 with Launch On to Android. It didn't occur with ES2 or Vulkan.Error: === Critical error: === Error: Error: Fatal error: [File:D:\Streams\Fortnite_Staging\Engin ...