Unreal Engine Issues
Unreal Engine Issues
Bake To Control Rig on a Spawned Actor in a Subsequence with Play Range that exceeds the Subsequence causes a Crash
UE - Anim - Anim in Engine - Jun 28, 2023This is a Regression. Tested in //UE5/Release-5.1 CL23901901 Using Bake To Control Rig on a Spawned Actor in a Subsequence with Play Range that exceeds the Subsequence causes a Crash. ...
BP - Nativization will fail at cook time if a BP class and a User-Defined Structure reference each other.
UE - Gameplay - Blueprint - Apr 20, 2017Note: This happens with "Exclusive" nativization mode as well. This occurs because the nativized UDS 'GetDefaultValue()' method is generated into a .h file rather than a .cpp file. This creates a c ...
Crash launching UE4Editor.exe from cmd.exe with -dx12 argument
UE - Graphics Features - Feb 3, 2017My Nvidia driver is our current approved driver: 378.49 ...
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 ...
FAnimationRuntime::BlendPosesPerBoneFilter() causes an assertive crash when Skeletal Mesh LOD is changed
UE - Anim - Runtime - Nov 1, 2023The crash occurs from "check(BoneBlendWeights.Num() == NumBones);" This crash occurs when the following conditions are met;The skeletal mesh LOD is changed.The number of bones is difference between ...
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 ...