Unreal Engine Issues
Unreal Engine Issues
UnrealVS: Compile Single File no longer working after upgrading to 5.3
UE - Foundation - Cpp Tools - UnrealVS - Oct 2, 2023After installing the UnrealVS version that arrived with 5.3. I can no longer use CompileSingleFile. It does however work on the Lyra project. One difference I notived, however, is that Lyra seems to ...
Chaos Cache : Event tracks are not saved second or subsequent geometry collection recordings
UE - Simulation - Physics - Destruction - Jul 23, 2024After the second recording time, the event listener registration in FGeometryCollectionCacheAdapter::InitializeForRecord is skipped. Here is a workaround :// We only need to register event handlers ...
[CrashReport] FBlueprintEditor::OnRemoveExecutionPin()
UE - Gameplay - Blueprint Editor - Jul 14, 2017This is a common crash affecting users on Mac and Windows. User Descriptionsremoving empty execution pins from sequence node Source Context 3952 void FBlueprintEditor::OnRemoveExecution ...
Crash triggering SetScalarParameterValueOnMaterial node
UE - Gameplay - Nov 30, 2015Crash occurs when the user triggers the SetScalarParameterValueOnMaterial function node. ...
Crash converting code project 4.7 to 4.8 ; Array index out of Bounds
UE - Gameplay - Blueprint - Jun 18, 2015Some users are experiencing a crash when converting their project from 4.7 to 4.8. From user reports it appears to be affecting those who have added code to their projects and created blueprints bas ...
Unable to open UE4Editor on Linux - Bad hlslcc header found
UE - Platform - Linux - Nov 4, 2015UE4Editor does not open on Ubuntu 15.10 due to the following error: [2015.11.04-16.19.35:974][ 0]LogOpenGLShaderCompiler:Error: Bad hlslcc header found! Missing '#'!Error in `./UE4Editor': free(): ...
Direct Capsule Shadows with Point Lights also project shadow on opposite side and direction
UE - Graphics Features - Dec 14, 2016When using a Direct Capsule Shadows on a skeletal mesh with a Stationary Point light, depending on the point lights placement, light source radius, and nearby surfaces will cast the shadow on the op ...
Renaming blueprint macro causes Failed import for EdGraph errors
UE - Gameplay - Blueprint - Feb 4, 2022Macro libraries try to support guid-based renaming: when a specific macro is renamed blueprints using the old name will automatically point to the new name and work properly. However, this fixup hap ...
Divergent group barriers in Lumen
UE - Graphics Features - Lumen - Apr 23, 2025Intel reported GPU crashes on their hardware caused by divergent group barriers in ScreenProbeConvertToIrradianceCS:[numthreads(THREADGROUP_SIZE, THREADGROUP_SIZE, 1)] void ScreenProbeConvertToIrra ...
Failed to generate Nanite data for mesh with bDoFastBuild enabled
UE - Graphics Features - Nanite - Oct 1, 2025If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...