Unreal Engine Issues
Unreal Engine Issues
Control Rig: crashes when compiling after rearranging input pins in an array in Example Rig Unit
OLD - Anim - Aug 20, 2019The crash doesn't occur every time, but it will happen within 3 swap and compiles in my experience. I got multiple different callstacks when I cause the crash using the reproduction steps (they are ...
Failed to generate Nanite data for mesh with bDoFastBuild enabled
UE - Graphics Features - Nanite - Oct 1, 2025If "bDoFastBuild" is enabled on a Static Mesh asset, in-editor it will never be able to have Nanite data built for it, preventing the Static Mesh from using Nanite. There is no way to fix this issu ...
Snapping Pivot to Vertices is Difficult using New Default Keyboard Shortcuts
Tools - Aug 6, 2015A licensee requested this ticket be entered as a bug report. The pivot vertex snapping functionality has changed and no longer functions as it did in prior versions of the engine. Somewhere the key ...
[CrashReport] UE4Editor_Engine!FAVIWriterWin::Initialize() [aviwriter.cpp:239]
UE - Anim - Sequencer - May 24, 2016Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 224 225 hr = Graph->AddFilter(CaptureFilter, L"Capture"); 226 if ...
[CrashReport] UE4Editor_Kismet!SBlueprintEditorSelectedDebugObjectWidget::GenerateDebugObjectNames() [sblueprinteditorselecteddebugobjectwidget.cpp:454]
UE - Gameplay - Blueprint - Dec 9, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Error message: Access violation - code c0000005 (first/second chance not available) Source C ...
Foliage lightmaps for LODs does not look correct
UE - World Creation - Worldbuilding Tools - Foliage - Jun 21, 2016When using the foliage tool with any mesh that has a LOD the lightmap generates artifacts for the instance. The base LOD will have correct looking lightmaps, however when pulling back and seeing the ...
[CrashReport] UE4Editor_Engine!UAnimMontage::IsValidAdditive() [animmontage.cpp:702]
OLD - Anim - May 19, 2016Error message: Stack overflow - code c00000fd (first/second chance not available) Source Context: 687 if (SyncGroup != NAME_None) 688 { 689 CollectMarkers(); 690 ...
Form Extended Structures will only destroy one mesh but not any attached
UE - Simulation - Physics - Destruction - Nov 28, 2014DESCRIPTION: While using form extended structures enabled for a Destruction mesh one of the meshes will be able to be damaged while any others attached will not fracture or damage at all. For exam ...
[AI] Bad entries in NavigationRepository for Box collision with bCanEverAffectNavigation set to false
UE - AI - Navigation - Oct 26, 2025Some components continue to dirty the navigation state even if bCanEverAffectNavigation is unchecked. Behavior appears very similar to an existing bug, [Link Removed] ([Link Removed]), which invol ...
Crash rendering image sequence if the Sub-Level with matinee is not loaded
Tools - Apr 15, 2016Crash rendering image sequence if the Sub-Level containing the matinee is not loaded. This seems to go away if the level is either set to "Always Loaded". Seems to be a result of people not switch ...