Unreal Engine Issues
Unreal Engine Issues
Parameter distributions can be reset to None in Cascade Particle Systems, causing Cascade to Niagara conversion to crash the editor.
UE - Rendering - Architecture - Niagara - Apr 18, 2022Cascade to Niagara conversion causes the editor to crash due to any distribution parameter in the Particle Emitter being reset to none. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL# 1831 ...
Crash When Substance Material Is Applied to a Mesh In HLOD System
UE - World Creation - Worldbuilding Tools - HLOD - Sep 3, 2018Crash when Substance material is applied to a mesh included in the HLOD system. Working as expected in 4.19 CL# 4033788. Unable to test issue in 4.21 CL# 4339215 due to plugin dependency. Found in ...
Crash when mousing over array parameter in Blueprint function graph while debugging
UE - Gameplay - Blueprint Editor - Mar 3, 2020Mousing over an array input inside a Blueprint function can lead to a crash. For this to occur, the first parameter of the function must be a User Defined Struct. ...
Watch Pin Crash on Softclasspath
UE - Gameplay - Blueprint Editor - Mar 26, 2020Mousing over a softclasspath pin from a struct while debugging a Blueprint can lead to a crash. ...
Editor crashes when opening a project that includes a plugin with more than two custom Volume classes
Tools - Jun 7, 2017Adding more than two custom Volume classes to a plugin results in any project that includes that plugin crashing when opening it in the Editor. There does not appear to be a problem with adding thre ...
LIVE: EDITOR: MATERIALS: CRASH: Setting the MipValueMode for MipLevel or MipBias to 4 or higher will crash the editor
UE - Graphics Features - Oct 14, 2014BRANCH: MAIN CHANGELIST: 2322258 PLATFORM: Windows DESCRIPTION: When using a texture sample with the MipValueMode to MipLevel or MipBias with a value of 4 or higher will cause a crash. ...
Adding a Blueprinted custom StaticMeshComponent to a Blueprint results in an Ensure being triggered.
UE - Gameplay - Components - Aug 24, 2015If a Blueprint is made from a custom Blueprintable StaticMeshComponent, and that Blueprint is added as a component to another Blueprint, an Ensure is triggered. No Ensure occurs if the custom nativ ...
Crash when adding a Material Layer with a MaterialFunctionCall node to a Material Instance
UE - Graphics Features - Mar 30, 2021Adding a Material Layer to a Material Instance that has a Material Function Call node connected to the Set Material Attributes node causes the editor to crash. I tested a Material Layer without the ...
Crash in FMovieSceneNumericVariant::Set when loading a Level Sequence with Custom Time Warp on Android
UE - ACT Character - Sequencer - Aug 14, 2026On Android, loading a Level Sequence fatals in the async loading thread: Assertion failed: (NewValue & ~PAYLOAD_Bits) == 0 MovieSceneNumericVariant.cpp:133 Unable to store a pointer outside of a ...
Editing parent emitters with mesh renderer in a niagara system causes crash
UE - Rendering - Architecture - Niagara - Nov 9, 2021After editing the parent emitters of a Niagara system with mesh renderer particles the engine will crash the next time the editor and system are opened. This was tested with both engine content cub ...