Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_ClothingSystemRuntime!FClothingSimulationNv::GetBounds() [clothingsimulationnv.cpp:730]
UE - Simulation - Physics - Character - Jul 17, 2017This is a common crash occurring for users in 4.16 and the 4.17 Preview. Additional information is not currently available. User Descriptionsjust shut down dont know why Source Context 807 ...
Orientation Warping breaks incoming poses where bones are in component space
UE - MVF Character - Animation - Apr 17, 2025The orientation warping node breaks incoming poses where bones are already in component space. This is because, in EvaluateSkeletalControl_AnyThread, we are repeatedly setting bone transforms direc ...
Changing bIsSpatiallyLoaded can cause an Actor to be duplicated during Play-In-Editor
UE - Engine Scaling - Streaming - World Partition - Dec 18, 2025Changing bIsSpatiallyLoaded can cause an Actor to be duplicated during Play-In-Editor. As described in the steps to reproduce, if we keep swapping bIsSpatiallyLoaded state and save a Streaming Level ...
Changing the ComponentClass of a ACharacter twice and trying to set a SkeletalMeshAsset crashes the engine
UE - Runtime - Animation - Jan 22, 2026Changing the ComponentClass of a ACharacter twice and trying to set a SkeletalMeshAsset crashes the engine with a "Cannot replace existing object of a different class" message. The conditions to re ...
Assert crash when playing Groom Cache with Card Mesh LOD
UE - Rendering - Features - May 29, 2026Playing a Guides Groom Cache while Card Mesh LOD (Guide-Based) is active causes an assert in RunHairStrandsInterpolation_Cards when the renderer switches to Card LOD. Assert location:Plugins/Runtim ...
Crash due to D3D device being lost. (Error: 0x887A0006 - 'HUNG')
UE - Graphics Features - Feb 22, 2017This JIRA has been made to consolidate all "D3D device being lost. (Error: 0x887A0006 - 'HUNG')" crashes into one. Previous Jira tickets include:[Link Removed][Link Removed][Link Removed][Link Remo ...
[CrashReport] Access violation - FLandscapeEditDataInterface::SetAlphaData()
UE - LD & Modeling - Terrain - Landscape - Jul 19, 2017This is a common crash affecting users in 4.15 and 4.16. This callstack was previously linked to [Link Removed], but that had a specific repro case that was fixed in 4.14. Users are not providing ...
[CrashReport] UE4Editor_Kismet!FBlueprintEditorToolbar::GetStatusImage() [sblueprinteditortoolbar.cpp:669]
UE - Gameplay - Blueprint Editor - Aug 15, 2017This is a trending crash coming out of the 4.17 release. Users have not provided descriptions of their actions when the crash occurred. Source Context 658 switch (Status) 659 { ...
Crash after adding an AI Perception component to a parent and child character
UE - Gameplay - Sep 14, 2017Crash after adding an AI Perception component to a parent and child character. First they both must have had AI Perception components > Compiled and saved > Then both AI Perception components delete ...
[CrashReport] FPhysicsAssetEditorSharedData::FPhysicsAssetEditorSharedData
UE - Simulation - Physics - Nov 2, 2017This is a trending crash coming out of the 4.18 release, and may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 2290 #end ...