Crash after removing decal (using set fade out node) during design time and then hitting play

UE - Gameplay - Blueprint - Feb 5, 2019

When calling set fade out on a decal during design time via a custom event that is setup to be called in editor a crash will occur when clicking PIE ...

Crash when generating proxy mesh

Tools - Jul 12, 2019

Generating 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 ...

BP - Exclusive nativization will fail at cook time if a BP class includes a ChildActorComponent with a Data-Only BP set as the ChildActor class.

UE - Gameplay - Blueprint - Apr 20, 2017

Note: This does not occur when the nativization mode is set to "Inclusive" in the Project settings. Current workaround: Ensure that the ChildActor class is NOT a data-only Blueprint, by adding scri ...

Engine crashes when trying to remove unused bones from skeleton

UE - Anim - Runtime - Mar 10, 2021

Engine crashes when i try to remove unused bones. I have lot of things going on in those characters, they all share same skeleton. There are anim blueprints with control rig and pose drivers, there ...

Changing the Curve Asset in a Material Instance That Uses a Material Layer Crashes the Editor

UE - Graphics Features - Apr 22, 2019

Changing the Curve Asset in a Material Instance That Uses a Material Layer Crashes the Editor. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 5974510 ...

Copying a Folder that contains the space character from the Outliner does not enclose the Folder name on Double Quotes. Because of that, later Pasting will only handle the first word of the Folder name.

UE - Engine Scaling - Streaming - Jun 10, 2025

Copying a Folder that contains the space character from the Outliner does not enclose the Folder name on Double Quotes. Because of that, later Pasting will only handle the first word of the Folder n ...

Crash when opening Post Process Material with Live Data Preview running in Profiler

UE - Foundation - Core - Feb 24, 2015

Edit: CrashReporter link: [Link Removed] When running the Session Frontend Profiler as a Live Data Preview and you open a Post Process material, the editor will crash to the desktop. Reproduced in ...

Crash compiling System when a Dynamic Input only outputs a numeric value

UE - Niagara - Apr 7, 2020

Crash compiling System when a Dynamic Input only outputs a numeric value Crash occurs using Scratchpad and a Dynamic Input Script asset.  The crash does not occur if I connect a parameter to the s ...

Editor crashes when attempting to open the Window menu after recompiling a Standalone Editor Window plugin

UE - Editor - UI Systems - Slate - Nov 26, 2018

Generated from CrashReporter Attempting to open the Window menu in the Editor after having used the Modules window to recompile a Standalone Editor Window plugin will result in the Engine crashing. ...