Cannot run any packaged project if "Force all skinned meshes to recompute tangents" has been enabled in an unrelated project

UE - Foundation - Core - Apr 20, 2018

Enabling the "Force all skinned meshes to recompute tangents" sets the value at a Windows user level so that it affects all UE4 projects opened by that user, including unrelated packaged projects. T ...

[CrashReport] UE4Editor_Engine!FAVIWriterWin::Initialize() [aviwriter.cpp:239]

UE - Anim - Sequencer - May 24, 2016

Error 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, 2016

This 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 ...

Crash when Importing .OBJ using the File > Import into Level Option

UE - Editor - Content Pipeline - Import and Export - Sep 6, 2016

This JIRA is being entered as a result of it being one of the top crashes in 4.13.0. Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 1671 ...

FBX animations generated under fractional framerates fail to import

UE - Anim - Runtime - Aug 24, 2022

We now have the following error that is generated in FFbxImporter::ValidateAnimStackif (!FMath::IsNearlyZero(SubFrame, KINDA_SMALL_NUMBER) && !FMath::IsNearlyEqual(SubFrame, 1.0f, KINDA_SMALL_NUMBER ...

Build failure after nativizing any child Blueprint class with function override (regression).

UE - Gameplay - Blueprint - Jun 7, 2018

Nativization regression in 4.20 preview 1. Cannot nativize overridden functions. Log Output:UATHelper: Packaging (Windows (64-bit)): D:/Projects/Unreal/NativizeMethod/Intermediate/Plugins/Nativized ...

Lighting Build Fails With High Density Foliage

UE - World Creation - Worldbuilding Tools - Foliage - Jan 16, 2018

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

[CrashReport] UE4Editor_DestructibleMeshEditor!UDestructibleChunkParamsProxy::PostEditChangeProperty() [destructiblechunkparamsproxy.cpp:18]

UE - Simulation - Physics - Destruction - Sep 14, 2017

This is a somewhat common crash occurring for users in 4.17 User Descriptionsdeleted something Source Context 7 UDestructibleChunkParamsProxy::UDestructibleChunkParamsProxy(const FObjectI ...

Editor Crashes When Duplicating Actor that Contains Additional Components

UE - Gameplay - Dec 11, 2015

Attempting to spawn a copy of an actor that has components that were added to an instance of that actor in the level causes a crash. Spawning the actor without adding additional components to the in ...

Imported heightmaps with 2x2 sections crash editor

UE - LD & Modeling - Terrain - Landscape - Jul 18, 2016

Importing a heightmap with 2x2 segments seems to cause the editor to crash in 3 different instances: 1. Importing the same 2x2 segment landscape a second time after deleting the first instance 2. ...