Editor Crashes when Isolating a Material Element on Skeletal Meshes with Ray Tracing Enabled

UE - Graphics Features - Lumen - Jul 3, 2019

With ray tracing turned on, clicking on the isolate material option next to a material slot on a skeletal mesh with more than one material slot, causes the editor to crash. Found in 4.22 CL# 7053647 ...

[CrashReport] UE4Editor_Foliage!AInstancedFoliageActor::GetAllInstancesFoliageType() [instancedfoliage.cpp:2244]

UE - World Creation - Worldbuilding Tools - Foliage - Dec 1, 2017

This is a common crash in the 4.18 release. User DescriptionsTried moving foliage to another sub-level. It wanted to move the foliage asset for some reason (I tried the same location - which was de ...

Crash exiting play in vr preview with -Vulkan and Oculus Rift

UE - Platform - XR - Dec 22, 2017

Editor crashes after exiting a play in vr session with -Vulkan enabled Exclusive to Oculus Rift ...

Crash closing Parent and Child blueprint after renaming variable

UE - Gameplay - Blueprint - Oct 4, 2017

REGRESSION Uncertain, was not able to repro in 4.17 with these steps. But I also can't repro with another version of QAGame in Binary editor. Crash occurs when the user closes a parent and child b ...

BP nativization emits incorrect C++ code for noexport-typed struct field access in some cases.

UE - Gameplay - Blueprint - Dec 18, 2019

In BlueprintCompilerCppBackendUtils.cpp: #define MAP_BASE_STRUCTURE_ACCESS(x) \ BaseStructureAccessorsMap.Add(x, TEXT("#x")) Needs to be changed to: #define MAP_BASE_STRUCTURE_ACCESS(x) \ ...

A Blueprint containing an array Swap node will fail to be nativized.

UE - Gameplay - Blueprint - Jul 17, 2020

Blueprint assets that utilize an array "swap" node to swap elements cannot currently be converted to C++. Current workaround: Either avoid use of the "swap" node or exclude the Blueprint asset from ...

Custom UVs don't store information properly in layered materials.

UE - Rendering Architecture - Materials - May 9, 2022

[Link Removed] I have this set up so that FX artists can stack UV manipulations, so I don't want to just have all the UV manipulation in the layer with the base color, even though that does give me ...

[CrashReport] Assertion failed: GetOuter()==NULL in UE4Editor_Core!FText::IsEmpty

Tools - Apr 17, 2017

This is a top 10 crash affecting many users. It is believed it may be related to the auto listen / reimport feature. The callstack shares similarities to past tickets, such as:[Link Removed][Link R ...

[CrashReport] UE4Editor_Slate!FDelegateBase::Unbind()

UE - Editor - UI Systems - Slate - Jul 24, 2017

This is a common crash affecting users in 4.16. User Descriptionstrying to import a texture D: Source Context 137 /** 138 * Unbinds this delegate 139 */ 140 ...

[CrashReport] Crash related to asset export - UnFbx::FFbxExporter::FillExportOptions() [fbxmainexport.cpp:152]

Tools - Sep 28, 2017

This is a trending crash coming out of the 4.18 previews. It seems to be related to exporting assets from the editor. User DescriptionsWhen Exporting assets (static meshes) multiple times via RIGHT ...