Unreal Engine Issues
Unreal Engine Issues
[AI] Crash while loading navmesh with async static mesh compilation enabled
UE - AI - Navigation - Jun 16, 2022I tried 10+ times but am unable to get this to reproduce locally. Licensee reports that this is a rare crash for them. ...
[CrashReport] UE4Editor_MovieSceneTracks!UMovieSceneCameraCutSection::GenerateTemplate() [moviescenecameracutsection.cpp:24]
UE - Anim - Sequencer - Oct 30, 2017This is a somewhat common Sequencer crash that occurs in 4.17 and 4.18. User DescriptionsWas trying to copy and paste a camera movement but something screwed up, I tried to add an already built Cam ...
If a component has been rotated at all, running ComponentSweepMulti on it does not return the correct position of any colliders on the component
UE - Simulation - Physics - May 14, 2015ComponentSweepMulti does not return the correct location of colliders if the component that is passed in has been rotated at all. The actual collision on the object in the game will be correct. ...
[MetaSounds] - Trigger on Threshold node Crashes editor on play when using literal value for threshold
UE - Audio - MetaSounds - Mar 15, 2022Editor crashes when Trigger on Threshold node is hooked up in a Metasound graph and played using a threshold value defined on the node. If you use an Input node for the Threshold value, the crash do ...
Crash when trimming animation and then undoing action
UE - Anim - Runtime - May 30, 2023Repro rate: 3/3 times This is a regression as the issue does not occur in 5.1.1 ...
Crash when IK Anim Node is used in post process blueprint.
UE - Anim - Rigging - Retargeting - Nov 5, 2024If an IK Anim node is used in a post-process animation blueprint when that post-process blueprint is active in persona. It will crash attempting to get dynamically created goal components from an ac ...
[Audio Synesthesia] - Setting a Synesthesia NRT's settings to None crashes editor
UE - Audio - Nov 7, 2022Setting an Audio Analysers NRT settings to None crashes the editor. Assertion failed: nullptr != LoudnessSettings [File:D:\SMoyls_UE5_Release-5.1\Engine\Plugins\Runtime\AudioSynesthesia\Source\Audio ...
Error during packaging if nativizing a blueprint that contains a TMap with a UserDefinedEnum as a key
UE - Gameplay - Blueprint - Jun 17, 2019Certain Map container calls (e.g. Find, Add) will fail to compile at packaging time if a Blueprint class containing a Map variable with a user-defined enumeration as the key type is nativized. This ...
Skeletal Meshes with imported LODs will use the highest LOD when generating Nanite, rather than LOD0
UE - Graphics Features - Nanite - Jan 14, 2025In the SkeletalMeshBuilder, Nanite is generated when enabled regardless of the LOD being requested. Since the Nanite enablement parameter is set on all LODs in USkeletalMesh::BuildLODModel and LODs ...
Editor crash when using PCG self pruning and complex collision
UE - World Creation - Procedural Tools - PCG Workflow - May 14, 2025While testing out pruning points based on collision, it was observed by the licensee that using complex collision seems to crash the editor. The editor crashes with the following error: ``` Asserti ...