Unreal Engine Issues
Unreal Engine Issues
Emissive material lighting falloff regression in GPU Lightmass
UE - Graphics Features - Sep 12, 2023Forum user noted that emissive lighting being built with GPU Lightmass is in fact being built, just not around the mesh, but in a larger radius and with reduced strength compared to 5.1.1. They foun ...
Crash on startup with a Blueprint deriving from an abstract class with a SpriteComponent
Tools - Feb 7, 2018Appears to be an issue with load order and the timing of when we populate the 'ShowSpriteCommands' and 'SpriteIDToIndexMap' containers, which we assert on if they're not the same size. The original ...
Unable to Save or Close Editor after Copying .FBX to Content Folder via Project Directory
Tools - Jul 5, 2017The editor is not allowing users to save or close a project after an .FBX file has been copied to the project's Content directory and allowing the Content Browser to discover the change in source fi ...
Copying a destructible mesh in the viewport loses reference to assigned mesh in the details panel
UE - Simulation - Physics - Destruction - Nov 4, 2014BRANCH: MAIN CHANGELIST: 2346079 PLATFORM: Windows DESCRIPTION: When copying a Destructible mesh in the viewport the Destructible Mesh component will not be shown for the copied mesh. The mesh can ...
"Too many texture coordinate sets" warnings in KiteDemo
UE - Graphics Features - Jan 17, 2017Full set of warnings:LogShaderCompilers:Warning: Failed to compile Material /Game/KiteDemo/Environments/Trees/HillTree_02/HillTree_01_Leaves_Mat.HillTree_01_Leaves_Mat for platform PCD3D_SM5, Defaul ...
Nativized widget with String table data crashes packaged game
UE - Gameplay - Blueprint - Jun 1, 2017There is a crash that is occurring for packaged games that use the string tables and nativized blueprints. This issue only affects a packaged build of the game. Testing for this issue did not yield ...
Crash when destroying a geometry collection actor
UE - Simulation - Physics - Aug 7, 2020When an actor with geometry collection is destroyed, the engine doesn't remove elements from array in the ChaosSolver So illegal references occurs. Removing element with following quick fix code ...
[CrashReport] UE4Editor_Landscape!DeleteLayerIfAllZero() [landscapeeditinterface.cpp:2300]
UE - LD & Modeling - Terrain - Landscape - Nov 28, 2017This is a semi-common crash in the 4.18 release. There is one recorded case of this callstack also occurring back in the 4.11 release, but it seems to be an exception. All other cases have only occu ...
Having lots of SpeedTrees loaded in/out/in with level streaming causes crash with Standalone game
UE - Foundation - Core - Jan 21, 2015Description: When using lots of static meshes placed in the scene and using level streaming to switch levels out can cause standalone game to crash while loading the map back in. For example, if you ...
[CrashReport][GPUCrash] UpdateRadianceCaches
UE - Rendering - Graphics Features - Ray Tracing - May 19, 2025#31 crash out of 7783 in UE 5.7.4 on Windows#3 crash for UE - Rendering - Graphics Features in UE 5.7.4 on Windows#1 crash for UE - Rendering - Graphics Features - Ray Tracing in UE 5.7.4 on Windows ...