Unreal Engine Issues
Unreal Engine Issues
NvEnc API creation failed in 4.24.1 with M60 card on AWS EC2 instances.
PixelStreaming - Dec 24, 2019i had an AWS EC2 g3.4xlarge instance(Nvidia M60 card). I could run 4.22 packed PS application correctly. When switching to 4.24.1, I got the following error when trying to start the application wit ...
NavLinkProxy potentially causing extra Character Movement
UE - AI - Feb 12, 2020The user is using a Nav Mesh Bounds Volume and a Nav Link Proxy. They are calling AI Move To to navigate to the point, but the Character reproduces extra movement and goes a bit past it. For debuggi ...
Client Ensure FShaderMapResource_SharedCode::ReleaseRHI is still referenced on exit/shutdown
UE - Niagara - Rendering - May 7, 2024Very rarely, the game client will crash on shutdown and the log will contain messages that look like: LogOutputDevice: Error: Ensure condition failed: false [File:Engine\Source\Runtime\RenderCore\ ...
Backwards-compatibility broken for the CDOs of Python-generated Unreal Types because of missing redirectors
UE - Editor - Workflow Systems - Feb 11, 2025Previously, all Unreal Types generated by python scripts would be created inside package "/Engine/PythonTypes". This was changed by [CL 32478991 in ue5-main branch], which meant to "remove the restr ...
Movable Skylight with DFAO creates Dark Areas when Combined with Reflective Material
UE - Graphics Features - Jun 9, 2016A user on the AnswerHub pointed out that his reflections when using a Movable Skylight with Distance Field Ambient Occlusion produces black results when combined with a reflective material. I trace ...
Ribbon Emitters Do Not Properly Kill Trails On Source Loss
UE - Graphics Features - Nov 18, 2016"Dead Trail on source lost" doesn't seem to work consistently. This is apparent when the source emitter's duration is longer than the particles being emitted. This bug also occurs if there is vary ...
Having a [ or ] in a folder name will cause that filepath to be invalid for anything related to an .ini file
Tools - Feb 16, 2017If a [ or ], which are used for syntax in .ini files, are included in a folder name, problems occur when that filepath is used for anything that is recorded in .ini files. The example given in the r ...
Crash using Import Commandlet on FBX that gets "Bones are too small" error when imported manually
UE - Editor - Content Pipeline - Import and Export - Feb 23, 2017Crash using Import Commandlet on FBX that gets "Bones are too small" error when imported manually Error from manual import: Warning The bone size is too small to create Physics Asset 'ButterflyVa ...
[CrashReport] UE4Editor_CoreUObject!UPackage::Save() [savepackage.cpp:4597]
UE - Gameplay - Blueprint Compiler - Jul 14, 2017This is a common crash affecting users in 4.16. Users have not provided additional information. Source Context// Set the parent index, ifthis export represents a UStruct-derived object 4589 ...
[CrashReport] UE4Editor_Core!FName::GetDisplayNameEntry() [unrealnames.cpp:894]
UE - Rendering Architecture - Materials - Sep 14, 2017This is a somewhat common crash in 4.17.1. This same callstack appeared a few times during 4.11, but then has not been seen until recently. Users have not provided any descriptions of their action ...