Unreal Engine Issues
Unreal Engine Issues
Crash when duplicating the Child Actor Component class
UE - Gameplay - Components - Jun 3, 2019Creating a blueprint class with a child actor component and setting its actor class to Point Light, then copying and pasting it causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 ...
Local binary build fails for iOS platform.
UE - Foundation - Core - Oct 5, 2017Attempting to create a local binary build of the Engine for the iOS platform using BuildGraph is currently failing. While trying to build UHT for Mac using a remote build, the build fails because it ...
Adding pin to CR node causes crash if input variable is assigned to one of the array element
UE - Anim - Rigging - Control Rig - Aug 22, 2025When a node has a variable assigned to one of its pins. You will get a crash every time you add a pin. I am sure this goes for all nodes with with the "add pin" functionality [Link Removed] ...
EQS Generators named "NewBlueprint" cause errors and crash
UE - AI - Feb 11, 2015Naming an EnvQueryGenerator_BlueprintBase derived BP "NewBlueprint" and deleting it causes new custom generators to not appear in the EQS. This can also lead to a crash when searching for the new ge ...
Crash retargeting animation with Virtual Bone
OLD - Anim - Oct 25, 2016Crash occurs when attempting to retarget an animation whose skeleton has a virtual bone. ...
Crash occurs when right-clicking in graph of a blueprint with a null parent class
UE - Gameplay - Blueprint - Mar 17, 2017REGRESSION No Crash occurs when the user right-clicks in the graph in a blueprint that has a Null parent class. ...
[CrashReport] UE4Editor_LevelEditor!SLevelViewport::BindShowCommands() [slevelviewport.cpp:1429]
Tools - Nov 10, 2017This is a longstanding but infrequent crash that has occurred since at least 4.16.1. Users have not provided any descriptions of their actions when the crash occurred. The callstack closely matche ...
Using collapse to function on an event binding causes a crash when that function is referenced in another class
UE - Gameplay - Blueprint - Nov 28, 2016Collapsing an event binding to a function results in a function that takes in a delegate as an input. This function existing ends up causing any references to this blueprint class in another class t ...
Packaging with plugins GearVR and GoogleVR together cause build failed with multiple definitions of GetHMD()
UE - Platform - XR - Sep 7, 2016Packaging with plugins GearVR and GoogleVR together cause build failed with multiple definitions of GetHMD(). Log attached for build error and error portion plugged into the callstack box. ...
Assertion trying to open packaged project on Linux: Default__MaterialInterface was listed as a fixed load order but was already processed
UE - Foundation - Core - Feb 20, 2017This might be related to [Link Removed]. ...