Unreal Engine Issues
Unreal Engine Issues
Packaging for IOS fails using SSH from a Windows Binary Build
UE - Platform - Mobile - Oct 23, 2019Errors in the log: * Undefined symbols for architecture arm64: * "___isPlatformVersionAtLeast", referenced from: * FMetalResourceHeap::CreateBuffer(unsigned int, unsigned int, unsigned int, mtlpp ...
Missing PSO Precaches in the engine
UE - Rendering Architecture - RHI - Aug 20, 2025A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...
NVIDIA 5080 GPU Crash when launching City Sample with DX12
UE - Graphics Features - Lumen - Apr 16, 2025UPDATE This issue no longer reproduces on driver versions 580.88 and higher. City Sample game crashes immediately upon opening with a NVIDIA 5080 with the latest drivers as well as some previous dr ...
Engine crashes when trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph
UE - Gameplay - Sep 27, 2019When trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph the engine crashes. If the blueprint that is copied into has a GameplayTag variable with the sa ...
Ambiguous Search Warning After Recompiling Blueprint of an Object Involved in a Level Sequence
UE - Anim - Sequencer - Apr 18, 2017The licensee is receiving an ambiguous search warning after recompiling the blueprint of an object involved in a level sequence that is contained in a hidden sublevel (which is then loaded and made ...
Multiple setter functions in UMaterialEditingLibrary always return false even when the parameter is correctly set on the MaterialInstance.
UE - Rendering Architecture - Materials - May 30, 2025In Unreal Engine, materials can expose parameters that can then be modified via instances (MaterialInstanceConstant). The UMaterialEditingLibrary provides several functions to modify these parameter ...
LevelSequence Editor consumes input, even if the user last focused the Level Viewport
UE - Anim - Sequencer - Nov 27, 2024LevelSequenceEditor has input priority over the Level viewport and other editor modules even though the Level viewport has been the last one selected. An example would be a cut operation. If you ha ...
Empty Shot Track Breaks Camera Component tracks when using Camera Cut Track
UE - Anim - Sequencer - Aug 18, 2016Empty Shot Track Breaks Camera Component tracks when using Camera Cut Track ...
Nvidia dedicated graphics card causes menus in the editor to duplicate
Tools - Jun 17, 2015When using a laptop with an added in graphics card that's Nvidia, the menus in the editor duplicate. However, if you force the editor to use the integrated graphics card, it does not occur. From th ...
[CrashReport] UEdGraphPin::Modify - UEdGraphSchema_K2::RecombinePin
UE - Gameplay - Blueprint - Sep 7, 2017This is a somewhat common crash affecting users in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 606 void UEdGraphPin::AddStructRe ...