Unreal Engine Issues
Unreal Engine Issues
Creating External Curve for a function's local struct variable causes editor to crash
UE - Gameplay - Blueprint - Sep 6, 2016Defining a FRuntimeFloatCurve inside a code based struct causes the editor to crash if the struct is added as a local variable to a blueprint function and the "Create External Curve" button is press ...
In Packaged builds, Chaos Cache Manager can't animate Geometry Collections with Nanite Enabled if Cache Mode is set to Static Pose
UE - Simulation - Physics - Destruction - Feb 27, 2025In Packaged builds, Chaos Cache Manager (CCM) can't animate Geometry Collections (GC) with Nanite Enabled if Cache Mode is set to Static Pose. The licensee tried to animate a CCM using Sequencer onl ...
MDL imported from Substance Source with Datasmith causes a crash
UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...
Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling
UE - Editor - Workflow Systems - Jan 11, 2022This is a regression.This does not affect UE5. Creating a function with parameter type TEnumAsByte<MyEnum> will crash while compiling. In 4.26 and UE5 the code compiles without issue, and the user ...
Creating a control rig via FControlRigBlueprintActions::CreateNewControlRigAsset crashes
UE - Anim - Rigging - Control Rig - Nov 10, 2023FControlRigBlueprintActions::CreateNewControlRigAsset is crashing in ResolveObjectHandleNoRead. Looking at the control rig in UControlRigBlueprint::Serialize, it's marked as pendingkill but I'm uns ...
Crash when generating proxy mesh
Tools - Jul 12, 2019Generating a proxy mesh with imported models and the simplify mesh flag set to true causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.3 (CL - 7053647), 4.23 (CL - 7288428), 4.24 (CL ...
Crash when executing Rename Asset or Duplicate Asset and other functions in Scripted Actions
UE - Gameplay - Blueprint - Jan 8, 2019In Scripted Actions, if you execute a function after using Rename Asset or Duplicate Asset, it will crash. If you do not execute the function it will not crash. ...
Crash when selecting Edit Map for Paper Tile Map Actor
UE - Gameplay - Jul 12, 2017Crash when pressing the Edit Map button for the Rendering Component of the Paper Tile Map Actor. If a new empty map is created first, the crash doesn't occur. User Description: Whenever I try to c ...
Take Recorder crashes if actor with animation despawns during recording
UE - Anim - Sequencer - Mar 8, 2021Skeletal animations are finalized at the end of recording, and expect the actor to still be around, but actors can despawn during recording leading to a crash. ...
Crash when opening a new level while opening Editor Utility Widget after opening and closing it multiple times
Tools - Jun 4, 2019Crash when opening a new level with reopened EditorUtilityWidget after opening and closing it multiple times. The cause of this issue is that UEditorUtilityWidgetBlueprint :: UpdateRespawnListIfNee ...