Unreal Engine Issues
Unreal Engine Issues
BP using nested child actor components in streaming level causes ensure condition failed
UE - Simulation - Physics - Solver - Jul 11, 2022This never happens on ue5.0.0 The problem appears to be caused by a deleted PhysicsProxy being registered with Solver. Since the solver accesses the deleted PhysicsProxy, it may crash. Checking a ...
Compiling after copy/pasting Event Tick with references into function crashes editor
UE - Gameplay - Blueprint - Aug 29, 2016When pasting nodes with references to an event tick into a function then compiling the editor will crash. Regression from 4.12.5 Binary CL-3039270 Edit - TravisL: I was able to repro this crash o ...
Changing particle system template via Blueprints crashes Editor and packaged game
UE - Niagara - Apr 4, 2019Setting a ParticleSystem component in a Blueprint to none/null with a "Set Template" node causes the editor and the packaged project to crash. I have noticed this when migrating my game to 4.22, whi ...
Crash when quick binding a function in a class that extends LevelSequenceDirector
UE - Anim - Sequencer - Sep 16, 2020The purpose was to create a Level Sequence Director inheritance class so that the same event could be reused in multiple sequencers. Attempting to quick-bind this base Level Sequence Director event ...
Editor crashes on compile with no warning when trying to access information from a "Slot as Canvas Slot" node on tick that has not been set yet by begin play
UE - Editor - UI Systems - Jul 1, 2015If a user creates a widget variable that is set on begin play and then tries to get information from that widget via the "Slot as Canvas Slot" node on tick the editor will crash. This appears to hap ...
Crash on applying animation modifier for some assets
OLD - Anim - Oct 29, 2019When removing curves on some assets, a crash can occur. This seems to be due to const FSmartNameMapping* CurveMapping being null and dereferenced within UAnimationBlueprintLibrary::RetrieveContainer ...
Get VR Focus State will cause a crash in standalone if an HMD device is in use
UE - Platform - XR - Jul 27, 2016Get VR Focus State will cause a crash in standalone if an HMD device is in use ...
Crash reparenting actor component to InstancedStaticMeshComponent
UE - Gameplay - Blueprint - Sep 14, 2016Reparenting an actor component to an instanced static mesh component causes a crash. Found on //UE4/Dev-Blueprints CL-3122712 ...
Assertion thrown while deleting a Curve from a Control Rig asset - DetailsViewWrapperObject.cpp: 231
UE - Anim - Rigging - Control Rig - Apr 1, 2022Assertion thrown while deleting a Curve from a Control Rig asset. ...
GAS: Ability that destroys owning actor on activate causes crashes due to ABILITYLIST_SCOPE_LOCK
UE - Gameplay - Gameplay Ability System - Oct 31, 2023A GameplayAbility that destroys its owning actor inside ActivateAbility() causes a crash, because actor destruction will modify the ability list but ActivateAbility() is called within an ABILITYLIST ...