Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_ClothingSystemEditor!UClothingAssetFactory::CreateFromSkeletalMesh() [clothingassetfactory.cpp:357]
UE - Simulation - Physics - Character - Aug 21, 2017This is a trending crash occurring in 4.17 and 4.17.1. Users have not provided any descriptions of their actions when the crash occurred. Source Context 345 if(Params.bTryAutoFix && Param ...
InverseExposureLerp should return 1.0 when EYE_ADAPTION_DISABLED is 1
UE - Graphics Features - Sep 16, 2024Materials using EyeAdaptationInverse may render incorrectly when debug visualizations are active. This issue can be resolved by modifying the EyeAdaptionInverse function in EyeAdaptionCommon.us ...
[CrashReport] UE4Editor_UnrealEd!FAssetEditorToolkit::InitAssetEditor() [asseteditortoolkit.cpp:62]
Tools - Aug 29, 2017This is an infrequent crash occurring for users in 4.17. Users have not provided any descriptions of their actions when the crash occurred. The callstack is the same as in [Link Removed], but that ...
WorldGridMaterial gets added as Element 0 when importing LOD model
When importing a LOD model, LOD material can get added as element 0, not preserving previous material assignment. It's not possible to re-order/delete the automatically added Element 0 WorldGridMat ...
Build fails due to potential divide by 0 error
UE - Graphics Features - Sep 29, 2017Shipping builds of the Engine fail when using the Visual Studio 2017 compiler due to a potential divide by 0 error. This is because the TotalColumnSize property of SMemoryStats is set to 0 by defaul ...
Editor crashes on Mac when launching with the command -MacExplicitRenderer=0
UE - Graphics Features - Jan 19, 2017Trying to launch the editor with the command -MacExplicitRenderer=0 causes a crash. At the time of the crash, the following line appears in the log:LogMac:Error: appError called: Assertion failed: A ...
Light min roughness set to 0 will create black artifacts on materials with negative roughness value
UE - Graphics Features - Aug 9, 2016Any light's min roughness setting creates black artifacts with materials who have a roughness value less than 0. The min roughness must be =< 0. ...
Assertion trying to open packaged project on Linux: Default__MaterialInterface was listed as a fixed load order but was already processed
UE - Foundation - Core - Feb 20, 2017This might be related to [Link Removed]. ...
Engine no longer compiles after backporting RHI thread improvements and crash fix
UE - Rendering Architecture - RHI - Apr 24, 2025Unreal Engine 5.4 code will no longer compile after applying both the RHI improvement code changes as described in [Link Removed] and the fix for the crash described in [Link Removed]. The compilati ...
[CrashReport] Assertion failed: OLEReferenceCount == 0 in UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private()
UE - Editor - UI Systems - Slate - Aug 22, 2017This is a regular and longstanding crash in 4.17 that has occurred since at least 4.14. Users have not provided any descriptions of their actions when the crash occurred. There has been some previo ...