Unreal Engine Issues
Unreal Engine Issues
Nanite Landscape crash on save
UE - Graphics Tools - Terrain - Landscape - May 21, 2024UDN description:When landscape is flagged as Nanite enabled but nanite mesh has not been built yet, a save operation (or an auto save) triggers a fatal failed check in ULandscapeNaniteComponent::Ini ...
Crash when changing r.MaterialQualityLevel when FastGeo plugin enabled in cooked build
UE - World Creation - Worldbuilding Tools - Sep 5, 2025The engine crashes when the r.MaterialQualityLevel is changed in a cooked game that uses the FastGeo Streaming Plugin. The crash doesn't repro with the same steps in Editor, just in a cooked build. ...
Animation Modifiers that contain a null Animation Sequence value cause the Engine to crash when applied to an Animation Sequence
OLD - Anim - Nov 14, 2018When an Animation Modifier passes a null Animation Sequence value to an Animation Sequence the Editor will crash. This is a regression from 4.20.3 (CL-4369336). This was reported and tested in 4.21 ...
When show propertymatrix and delete target actor, the editor crash
Tools - Jul 11, 2017It looks like it is null reference in propertymatrix. It always occurs when I execute the reproduction procedure. ...
Crash closing the TM_Landscape map in the editor
UE - World Creation - Worldbuilding Tools - Foliage - Apr 18, 2017The editor is crashing after closing the TM_Landscape level This is a regression from 4.15.2 ...
Crash after Disabling Post Process Blueprint on a Skeletal Mesh
OLD - Anim - Aug 20, 2019Changing the Anim Class in the Details Panel before Disable Post Process Blueprint can prevent the crash from occurring. Changing the Animation Mode does not seem to prevent this crash. The conten ...
Converting a landscape to blueprint crashes editor
UE - Gameplay - Blueprint - Sep 17, 2015Converting a landscape to a blueprint immediately crashes the editor. Frequency: 2/2 ...
Crash When Renaming a Duplicated Collapsed Node Graph With a Period in the Name
UE - Gameplay - Blueprint - Feb 3, 2017A crash is occurring if you collapse a node and name the collapsed graph something that contains a period. The crash occurs if you copy and paste the collapse graph, and then attempt to rename it. I ...
Assigning FSoftObjectPath to null entry in Blueprint Trips ensure on Compile/Load
UE - Gameplay - Blueprint Editor - Apr 21, 2022[Link Removed] Able to set default values for Sequence & Map variables for a Movie Pipeline Executor Job causing an Ensure & Crash. Repro Rate: 4/4 Tested this in //UE4/Release-4.27 @ CL#18319896 ...
Setting the sequence of a Level Sequence Actor after playing a sequence with an event will crash if played
UE - Anim - Sequencer - Mar 9, 2023The editor crashes trying to find an event on the other level sequence when playing back the new one. ...