Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor-SlateCore.dylib!SWidget::FindChildGeometry(FGeometry const&, TSharedRef<SWidget,()
UE - Editor - UI Systems - Slate - Jul 20, 2017This is a common crash affecting Mac users in 4.16, and going back at least to 4.11. This seems to be a continuation of [Link Removed], which was closed as cannot repro. User Descriptionswas looki ...
Nativized packaging fails when attaching paper Flipbook component to a parent paper Flipbook component that is Inherited.
UE - Gameplay - Blueprint - Jan 8, 2019Nativized packaging fails when attaching paper Flipbook component to a parent paper Flipbook component that is Inherited. ...
Editor crashes due to a material that contains MPCs migrated from another project
UE - Rendering - Architecture - Materials - Apr 29, 2024[2024.04.29-16.49.46:563][970]LogUObjectGlobals: Warning: LoadPackage can't find package /BEURRE_040824_041224/NewMaterialParameterCollection. [2024.04.29-16.49.46:563][970]LogUObjectGlobals: Warning ...
[CrashReport] UE4Editor_Engine!USceneComponent::UpdateComponentToWorldWithParent() [scenecomponent.cpp:492]
UE - Gameplay - Components - Aug 29, 2017This is a common and longstanding crash that has occurred since at least 4.12 and affected more than 400 users. User DescriptionsWas following the first Blueprint tutorial and dragged the geometry ...
Structs in the Instance Settings for a Static Mesh in the Foliage Fill tool are not editable.
UE - World Creation - Worldbuilding Tools - Foliage - Dec 17, 2014Adding a struct to the foliage panel results in the struct not being editable for a static mesh instance. The same struct is editable if applied to a PrimitiveComponent. ...
[UE 5.8][MediaViewer] Crash when switching Level Editor viewport type to Cinematic Viewport
UE - CAPT - Tools - Media Viewer - Oct 19, 2026POST LINK: https://forums.unrealengine.com/t/ue-5-8-mediaviewer-crash-when-switching-level-editor-viewport-type-to-cinematic-viewport/2747407 POST BODY:Summary The editor crashes when Media Viewer ...
[CrashReport] Assertion on in UMaterialInterface::InitDefaultMaterials()
UE - Graphics Features - Jun 28, 2017This is a common Mac crash occurring in the 4.16.1 release. I have not found any evidence of it occurring on Windows. The callstack closely matches [Link Removed], which was briefly experienced by ...
Struct with a single unaltered element will remove the element from the struct on compile
UE - Gameplay - Blueprint - Oct 7, 2015If used inside a UMG Blueprint, a struct that has only one element will remove the element from the struct after compiling the blueprint. If the element is edited or a second element is added then ...
Crashes after destroying a skeletal mesh attached via socket name (not bone name), the destroyed mesh remains welded.
UE - Runtime - Simulation - Jul 18, 2025On welding physics bodies during primitive component attachment, UPrimitiveComponent::WeldToImplementation() calls GetRootWelded() and then GetBodyInstance() on the returned root. This searches by b ...
[CrashReport] Crash occurring in Phonon::FPhononReverb::ProcessMixedAudio
UE - Audio - Apr 27, 2017This is an early trending crash coming out of the 4.16 Preview. Users have not provided any additional information. From Log:/Game/VirtualRealityBP/Maps/UEDPIE_0_StartupMap.StartupMap (0.006787s) ...