Unreal Engine Issues
Unreal Engine Issues
InitSDL() failed error when launching onto Linux
UE - Platform - Linux - Jan 22, 2021When launching onto Linux, the launch on fails Also tried launching on with QA-Promotion, still failed with same error, ruling out water ...
When creating an asset from an Emitter with a scratch module, changes to the new module will not propagate
UE - Niagara - Jun 21, 2021A scratch module made in an emitter, will not reflect the changes of its new parent when an asset is crated from the emitter. ...
[CrashReport] UE4Editor_Engine!UHierarchicalInstancedStaticMeshComponent::BuildTreeIfOutdated
UE - World Creation - Worldbuilding Tools - Foliage - Jun 8, 2017This is a common crash occurring in the 4.16 release. It seems to be related to applying a material to a mesh that is being used in Foliage. Crash Reports are spread out among many different Crash ...
Blueprint heatwire effects do not work when touching user macros
UE - Gameplay - Blueprint - Jul 21, 2016Heatwire effects do not work for execution wires touching user macros. Native macros do not exhibit this behavior. Note: This is with BP Profiler turned off. ...
UForceFeedbackEffect is only making slight vibration in iOS when value rises from 0 or effect is started.
UE - Platform - Mobile - Jun 11, 2019UForceFeedback is expected to give vibration just like in the graph of the asset. But only in iOS it is not. It is expected to give continuous vibration following the forcefeedback asset, but only ...
Cascade particle system crash when changing levels in a cooked game
UE - Niagara - Jan 6, 2021Changing levels with an auto-released particle system will cause cooked builds to crash. This is a regression. This crash does not occur in 4.25 ...
Lumen ignores Landscape Holes (Landscape Visibility) when Hardware Ray Tracing is enabled and Ray Lighting Mode is set to Surface Cache
UE - Graphics Features - Ray Tracing - Jan 31, 2025Context Lumen is the default global illumination and reflections system. Lumen renders diffuse interreflection with infinite bounces and indirect specular reflections in large, detailed environments ...
Project upgrade to 4.15 does not complete if the Runtime Mesh Component is installed in version 4.14 and not in 4.15
UE - Foundation - Core - Apr 17, 2017If the Runtime Mesh Component is installed in the 4.14 Binary Engine, upgrading a copy of a code project from 4.14 to 4.15, even if it does not use that plugin, will result in the upgrade process ha ...
Crash copying a Static Meshes primitive collision member and pasting it on another element
Tools - Jul 24, 2017Crash copying a Static Meshes primitive collision member and pasting it on another element. The pasted element seems to need at least 2 members for the crash to occur. User description: Editor Cr ...
Rendering sequence with livelink data has issues with smooth engine offset
UE - Virtual Production - IO - LiveLink - Apr 26, 2023[Link Removed] for reference Playing back a sequence shouldn't have buffered samples. We should have a single one, which was built from the sequence. We need to make sure when played back that it ...