Children of blueprints resaved by reference fixups can have invalid asset registry tags

UE - Gameplay - Blueprint - May 18, 2020

If a parent blueprint has data that is used by asset registry tags such as the AssetBundleData, any child blueprints that derive from it will use that in their exported tags. If the parent blueprint ...

Fast Path pin update can break when anim BP compilation generates warnings

UE - Anim - Runtime - May 13, 2021

It seems that a Anim BP that generates a warning will break the updating of pins that are connected via fastpath in other parts of the graph. This was reported on the following UDN: [Link Removed] ...

Python function unreal.AssetRegistry.get_assets_by_class is broken

UE - Foundation - Core - Nov 21, 2022

Repro Rate: 3/3 This issue was reproduced in //UE5/Release-5.1 at CL 23058290. This is confirmed to be a regression since the errors do not occur on the previous version and is regression tested o ...

Renaming engine folder causes GenerateProjectFiles to fail on Mac

UE - Platform - Apple - Jul 11, 2016

When running GenerateProjectFiles.command on Mac from a folder with a space in the nam, the folder structure is read incorrectly. This leads to the .command file failing when trying to set up Mono ...

Build Warning when HotReloading - LogUObjectGlobals:Warning: Guid is already used by

UE - Gameplay - Blueprint - Sep 12, 2016

Changing class code causes class instance placed in the viewport to produce the warning message shown below upon hot reload. Also reported that callstack occurs but does not crash the editor. The ...

Connecting GetSequenceBinding node to LevelSequence including Spawnable Actor etc. will result in error

UE - Gameplay - Blueprint Editor - Feb 22, 2018

[Link Removed] ・Open attached project ・Open NewMap ・Confirm that an error appears on the console ・When creating a Windows (64-Bit) package in this state, the same error occurs ...

Building development version on Linux fails due to iOS folder structure

UE - Platform - Linux - Jun 26, 2017

In the default Linux folder configuration, Engine/Source/Runtime/Core/Public contains two folders, iOS and IOS. The iOS folder contains the files IOSCriticalSection.h and IOSCriticalSection.h while ...

[CrashReport] UE4Editor_BlueprintNativeCodeGen!FBlueprintNativeCodeGenModule::GenerateSingleAsset() [blueprintnativecodegenmodule.cpp:391]

UE - Gameplay - Blueprint Runtime - Aug 22, 2016

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: bSuccess [Link R ...

Project fails to package for Android if a blueprint has a variable that sets itself on construct

UE - Gameplay - Blueprint Runtime - Jan 5, 2017

Project fails to package for Android if a blueprint has a variable that sets itself on construct. ...

Adding Multiple Scene Components to an Actor Causes Parenting Errors

UE - Gameplay - Components - Jan 5, 2016

Attempting to add multiple instances of a Scene Component that was created in code and contains a component such as a Box Collider causes the Box Colliders of each Scene Component to be parented to ...