Unreal Engine Issues
Unreal Engine Issues
Project configured to spawn Niagara system via Character blueprint in a Code project fails to Cook, then crashes project on open
UE - Niagara - Mar 7, 2019Project configured to spawn Niagara system via Character blueprint in a Code project fails to Cook, then crashes project on open Discovered when verifying [Link Removed] (also similar to [Link Remo ...
SimpleStreamableAssetManager: Memory Bloat/Leak in AssetIndexToBounds4Index
UE - World Creation - Worldbuilding Tools - Feb 3, 2026Overview: A report has been received regarding a memory leak that eventually leads to OOM crashes when s.StreamableAssets.UseSimpleStreamableAssetManager=1 is enabled. In projects that utilize this ...
5.5 Static Mesh Import Pipeline Regression
UE - Editor - Content Pipeline - Import and Export - Apr 25, 2025This question was created in reference to: [Link Removed] This post references the first post because this problem was not discovered till now. I think it was masked because the issue appears to be ...
Ongoing D3D 'HUNG' crash in FD3D11DynamicRHI::GetQueryData
UE - Graphics Features - Jan 18, 2017This is a new ticket for the D3D 'HUNG' crash originally reported in [Link Removed]. Some fixes were introduced in 4.14.2 that decreased the occurrences of this crash, but other cases are still ongo ...
Crash when using "Convert to Variable Curve"
OLD - Anim - Jun 7, 2016Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 7 8 DECLARE_CYCLE_STAT(TEXT("AnimSeq EvalCurveData"), STAT_AnimSeq_EvalCurv ...
[CrashReport] UE4Editor_UnrealEd!FEdGraphUtilities::PostProcessPastedNodes() [edgraphutilities.cpp:138]
UE - Gameplay - Blueprint - Jan 24, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
Crash when removing and re-adding instances to an InstancedStaticMeshComponent with PerInstanceCustomData.
UE - World Creation - Worldbuilding Tools - Jan 22, 2026When using an InstancedStaticMeshComponent with PerInstanceCustomData, the number of float elements in the "Custom Data" array should always be equal to NumCustomDataFloats multiplied by the number ...
[Enhanced Input] Chord trigger fails when its referenced action lives in a lower-priority IMC
UE - Gameplay - Input - May 18, 2026Summary A UInputTriggerChordAction does not fire when the action it references (the "chording action") is mapped in a different Input Mapping Context with a lower priority than the IMC containing the ...
HandleKismetEvent (console cmd 'ke'): GT-ALT deadlock when user function flushes async loading
UE - Core - Asset Loader - Apr 8, 2026Context In builds with the in-game console enabled, users can use the ‘ke’ command to execute UFUNCTIONS on any object:ke * MyFunc // run MyFunc() on ANY UObject with a ufunction with that name ke ...
PATH not passed to NMake script when building Android from Visual Studio
UE - Core - Cpp Tools - UnrealBuildTool - Jan 25, 2023After upgrading from UE5.0.3 to UE5.1, we started seeing this error when trying to build Android Development from Visual Studio (VS2022 17.2.1): Running UnrealBuildTool: dotnet "..\..\Engine\Binari ...