Unreal Engine Issues
Unreal Engine Issues
Inconsistent texture loading issue within material editor
UE - Rendering Architecture - Materials - Jul 16, 2025A licensee has reached out via EPS about a texture loading issue they are having in-editor. I summarized the most important points below:The issue relates to texture load failure associated with mat ...
Behavior of configuration file hierarchy is different from document
UE - Foundation - Core - Nov 6, 2015Licensee reported behavior of configuration file hierarchy is different form document here (https://docs.unrealengine.com/latest/INT/Programming/Basics/ConfigurationFiles/index.html) Doc: 1. Engine ...
[CrashReport] UE4Editor_CoreUObject!FPackageName::LongPackageNameToFilename() [packagename.cpp:381]
Tools - Jul 14, 2017This is a common crash affecting users in 4.15 and 4.16. It appears to often occur while editing static meshes. User DescriptionsI was editing a mesh, added a socket, didnt immediately rename it, s ...
[CrashReport] UE4Editor_UnrealEd!PackageTools::ReloadPackages() [packagetools.cpp:576]
Tools - Jun 29, 2017This is a common crash affecting users on 4.16. Users have not provided any descriptions, so additional information is currently unavailable. Source Context 561 ::SortPackagesForReload( ...
Native variable references like GameplayAttribute cannot be searched by "Find in Blueprints" or "Asset Search"
UE - Framework - Blueprint Editor - Jan 4, 2023"Find in Blueprints" does not turn up results when searching a GameplayAttribute by name, even when there is a GameplayEffect blueprint that has a modifier for that GameplayAttribute. This is becau ...
UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future
UE - Networking - Feb 16, 2024A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...
Exporting Mannequin to Blender then Re-importing to UE4 Incorrectly Rotates Animations by 90 Degrees
OLD - Anim - Jun 16, 2015Exporting the UE4 Mannequin to Blender then re-importing to UE4 breaks the animations, causing them to reimport rotated 90 degrees ...
Animation Orientation does not Auto-Convert to UE4 Coordinates when Reimporting
OLD - Anim - Nov 23, 2015Animation orientation does not auto-convert to UE4 coordinates when reimporting the same way it does when importing the same animation as a new import. In other words, a run animation generated from ...
Crash Opening Editor with Vulkan - Fatal Error - RenderingThread.cpp
UE - Rendering Architecture - RHI - Mar 15, 2019Editor crashes when opening to project browser on Linux. Fatal error: [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 819] Rendering thread exceptio ...
A Skeletal Mesh simulating physics that hits a Geometry Collection Actor with OneWayInteraction true, OneWayInteractionLevel 1, and is using Damage Propagation (default) will be accelerated so fast it immediately disappears by hitting the world limits
UE - Simulation - Core - Jan 20, 2025A Skeletal Mesh simulating physics that hits a Geometry Collection Actor with OneWayInteraction true, OneWayInteractionLevel 1, and is using Damage Propagation (default) will be accelerated so fast ...