Unreal Engine Issues
Unreal Engine Issues
Bone names of ~100 characters or longer crash the editor when baking to control rig
UE - Anim - Rigging - Control Rig - May 15, 2025This is an issue with inconsistencies over rig names and how control names are generated. We expect that a control name will be appended with _CONTROL or _CURVE_CONTROL. But because URigHierarchy: ...
Using a struct to set a button style causes a crash
UE - Gameplay - Blueprint - Mar 17, 2015If a struct is give a button style as one of its variables and then that variable is in turn used to set the button style of a button widget the editor will crash when trying to save ...
Crash after deleting Editor Utility Widget and accessing it from Window menu
Tools - Feb 25, 2019Crash after deleting Editor Utility Widget and accessing from Window menu ...
Editor crash while saving asset during cook operation
UE - Foundation - Data Pipeline - Cooker - Apr 2, 2025It is possible to experience an editor crash in 5.5.4 when the cook process generates a warning that references an asset while the editor is saving. It seems that during a save operation, the code t ...
Moving folder of assets crashes editor
UE - Simulation - Physics - Dec 23, 2015Moving the contents folder for the Dynamic Clocks marketplace asset crashes the editor immediately. Frequency: 5/5 CrashReporter: [Link Removed] ...
Ensure occurs when force deleting a BP asset that is still referenced in memory
UE - Gameplay - Blueprint - Aug 2, 2016Upon force deletion of a BP asset still referenced in memory an ensure is hit. ...
Ensure condition failed / Crash on BP Compile after adding variable
UE - Gameplay - Blueprint Compiler - Jan 26, 2018Crash when compiling BP (containing user defined struct + object reference) after adding variable. ...
Crash force deleting blueprint being used as a Child Actor Component in an actor in the level
UE - Gameplay - Components - Mar 23, 2018REGRESSION: Yes, the crash does not occur in 4.18. A crash occurs when the user force deletes an actor blueprint that is being used as a child actor component in another blueprint that's in the lev ...
Changing the codec of a Curve Compression Setting asset results in a crash
UE - Anim - Nov 18, 2021When creating a Curve Compression Setting asset and changing the codec from Compressed Rich Curves to either Uniform Indexable or Uniformly Sampled the editor crashes. Tested in //UE4/Release-4.26 ...
Spawnable Level Instance via Sequencer in WP map
UE - World Creation - Worldbuilding Tools - Level Instances - Aug 21, 2023ULevelInstanceSubsystem::OnActorDeleted: check(!IsEditingLevelInstanceDirty(LevelInstance) && !HasDirtyChildrenLevelInstances(LevelInstance)); ...