Unreal Engine Issues
Unreal Engine Issues
Updating C++ projects with Marketplace plugins in 4.25.2 fails to build project
UE - Foundation - Cpp Tools - Plugin System - Jul 24, 2020Projects created in previous engine versions fail to build in 4.25.2Running D:/Epic Games/UE_4.25/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Win64 -Project="D:/Unreal Projects/MyProject4 ...
Crashes Caused by Deinitialization of Variables with Specific Names
UE - Gameplay - Components - Jun 14, 2018I was able to repro the crash in 4.19. Unable to open sample project in 4.20 or 4.21. Per Licensee: While porting one of our classes from using UMaterialBillboardComponent to a hand rolled Billboar ...
[CrashReport] UE4Editor_UnrealEd!ObjectTools::ForceDeleteObjects() [objecttools.cpp:2097]
UE - Gameplay - Blueprint - Aug 8, 2016This JIRA is being entered as a result of it being one of the top crashes occurring in 4.13 Preview 1. Error message: Ensure condition failed: Lhs.CurrentNum == Lhs.InitialNum [Link Removed] [Line ...
BP: DEBUG: Debug filter automatically switches to one of the instances of blueprint which doesn t let user debug other instances of blueprint
UE - Gameplay - Blueprint - Aug 5, 2014GameVersion Branch: UE4 Configuration: Main Version: 2242091 CommandLine:qagame -log Label: GUBP Node Shared_LabelPromotable built from changelist 2242091 DESCRIPTION: Debug filter automatically sw ...
CapsuleComponent Shape sometimes reverts to previous value after entering a new value
UE - Foundation - Core - Nov 28, 2014If you manually type in the value for Capsule Half Height, it will sometimes revert back to it's previous value upon hitting Enter. The CapsuleComponent's shape in the Blueprint's Viewport adjust to ...
[CrashReport] SMediaPlayerEditorOutput::UpdateSoundWave(), SetAudioSink()
Media Framework - Aug 9, 2016This JIRA is being entered as a result of it being one of the top crashes in 4.13 Preview 1. Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 67 ...
Mirror Data Table is NOT added SyncMarker automatically when creating
UE - Anim - Runtime - Oct 27, 2022Mirror Data Table is added rows about Bone, Curve, Notify when creating. But SyncMarker is ignored. The following codes can fix this issue. Engine/Source/Runtime/Engine/Private/Animation/MirrorDa ...
Assigning a static mesh to a Mutable Clip Mesh With Mesh Node can crash the editor
UE - Anim - Mutable - Jul 4, 2025Context: The Mutable plugin has a modifier node called Clip Mesh With Mesh that allows Static Mesh modifiers to be assigned as the clip mesh. Under certain circumstances, an assert can be triggered ...
[CrashReport] UE4Editor_Engine!UModelComponent::GetPhysicsTriMeshData() [modelcomponent.cpp:674]
UE - Simulation - Physics - Sep 12, 2017This is an occasional crash in the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 664 for(int32 ElementIndex = 0;ElementIn ...
In a Geometry Collection, enabling Nanite Fallback in a Nanite Enabled collection won't generate a Physics Body when Nanite is disabled
UE - Simulation - Physics - Destruction - Jun 30, 2025In a Geometry Collection, enabling Nanite Fallback in a Nanite Enabled collection won't generate a Physics Body when Nanite is disabled. To verify this, follow the steps provided in the Steps to Re ...