Unreal Engine Issues
Unreal Engine Issues
Crash when attempting to deform a landscape when Paint Layer has not been used - Assertion failed: !TargetProxy->HasLayersContent() || !InCanUseEditingWeightmap || EditingLayerGUID.IsValid() [LandscapeEdit.cpp Line: 5252]
UE - LD & Modeling - Terrain - Landscape - Sep 9, 2020The editor crashes when attempting to draw a weight blended texture to the landscape if it hasnt been used on that landscape yet. This crash can be completely avoided if the stone texture is painted ...
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 ...
AnimNotify serialization crash in editor
UE - Anim - Runtime - Mar 15, 2026The crash is caused by changing the variable type of an AnimNotify that is already referenced by a montage. This issue cannot be reproduced in 5.6. ...
Engine Crashes When Building Lighting if Precomputed Visibility Aggressiveness is set to VIS Max
UE - Graphics Features - Nov 30, 2017The engine crashes when building lighting if World Settings >> Precomputed Visibility >> Visibility Aggressiveness is set to "VIS Max." A Fatal Error message sometimes appears (screen shot attached) ...
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 ...