Unreal Engine Issues
Unreal Engine Issues
Crash-Connecting output of unspecified functions to pins on the material result node
UE - Rendering - Architecture - Materials - Dec 6, 2017Crash-Connecting output of unspecified functions to pins on the material result node. This does occur in Main at CL: 3792526 ...
Velocity Scene Texture Data Integrity Issues
UE - Rendering - Features - Jan 8, 2026When a Post-Process Material uses the Scene Texture Material Expression, the following code is generated: ``` MaterialFloat2 Local0 = Parameters.TexCoords[0].xy; MaterialFloat2 Local1 = ClampSceneT ...
[CrashReport] UE4Editor_Engine!FTextureCacheDerivedDataWorker::BuildTexture() [texturederiveddata.cpp:772]
UE - Graphics Features - Feb 20, 2017Error message: Access violation - code c0000005 (first/second chance not available) Source Context:757 if (SourceMips.Num()) 758 { 759 FFormatNamedArguments Args; ...
GAS PlayMontageAndWait: Server applies root motion with wrong scale at last montage tick
UE - Gameplay - Gameplay Ability System - Apr 3, 2024User reported: when playing an AnimMontage via GameplayAbility with the PlayMontageAndWait ability task that has a custom value for AnimRootMotionTranslationScale, (dedicated) servers can apply an i ...
Crash from generated Merged Actor with no created lightmap UV
UE - Gameplay - Nov 11, 2016If you import a static mesh with no setup lightmap and uncheck the option for Generate lightmap UV so that only the UV Channel 0 is present. When you use the Merge Actor tool with a single one of th ...
[Feature Request] Cook in the Editor should only save Asset Registry for the cook target platform
UE - Foundation - Core - Cooker - Jan 18, 2018Request from Licensee: When launch Launching in the editor, it seems that asset registries of platforms other than those specified in Launch are also generated. LogAssetRegistryGenerator: Startin ...
Paper2D performance regression due to TArray resizing
UE - Graphics Features - Aug 16, 2019We've noticed after upgrading our heavy Paper2D project to 4.22 that tilemap performance has been massively degraded compared to previous versions. After some digging we found out that it's due to a ...
[CrashReport] UE4Editor_Persona!FBoneDescription::SetScore() [bonemappinghelper.h:31]
OLD - Anim - Sep 14, 2017This is a somewhat common crash that appears to occur only in 4.17.1 (possible regression?). Users have not provided any description of their actions when the crash occurs. Source Context 20 ...
[CrashReport] UE4Editor_SequenceRecorder!FAnimationRecorder::Record() [animationrecorder.cpp:616]
UE - Anim - Sequencer - Aug 22, 2017According to CrashReporter there is both an Ensure and a Crash that occur with this callstack. The error message for the Ensure is Ensure condition failed: UIDList == AnimationCurves.UIDList [File:D ...
Crash on opening Control Rig asset that was created in UE5-EA
UE - ACT Character - Control Rig - Nov 8, 2021This issue was found from an external user on Twitter using UE5-Early Access - [Link Removed] The crash happens on asset load. User says that they were following Gabriele's video - [Link Removed] ...