UAssetImportTask::bReplaceExisting is not supported with interchange

UE - Editor - Content Pipeline - Import and Export - Aug 25, 2023

Add this code to a function you call from a blue utility widget or any other way to start the import with this code.TArray<UAssetImportTask*> ImportTasks; for (int32 i = 0; i < cFC.Files.Num(); i++) ...

Editor crashes when opening a project that includes a plugin with more than two custom Volume classes

Tools - Jun 7, 2017

Adding more than two custom Volume classes to a plugin results in any project that includes that plugin crashing when opening it in the Editor. There does not appear to be a problem with adding thre ...

Adding a Local Variable to a blueprint Construction Script will cause a crash

UE - Gameplay - Blueprint - Dec 18, 2014

Adding a Local Variable to a blueprint Construction Script will cause a crash ...

Crash when removing or disabling an additive layer track in Persona

OLD - Anim - Oct 3, 2016

Editor is crashing when removing and Additive layer Track in persona. Editor also crashes if the curve is disabled rather than deleted. This is a regression from 4.13 ...

Editor crashes if a data table containing an attenuation settings struct

Tools - Apr 19, 2016

Editor crashes if a data table containing an attenuation struct is opened in the data table editor. Frequency: 4/4 Crashreporter: [Link Removed] Regression? (No), issue (does) occur on 4.10.4 ...

Duplicating Level With Large _BuiltData File Results in Editor Crash

UE - Foundation - Core - Jun 7, 2018

Trying to duplicate a level in the editor that has a large _BuiltData file results in a crash. In the case of the supplied test level, it is over 3 GB. Crash repros in 4.19.2 and Main (CL 4115885). ...

Split Struct pins cause errors when a project is converted to 4.17

UE - Gameplay - Aug 11, 2017

Split Struct pins cause errors when a project is converted to 4.17. You are still unable to split struct pins even if a new variable is created for the struct. Only adding a new variable to the st ...

The socketbuilders do not properly join multicast groups on iOS

UE - Networking - Jul 26, 2019

On iOS, using the code in the UDP socketbuilders causes the sessions tool to not join with iOS devices. Giving the error EADDRNOTAVAIL. If the user falls back to the other code function that uses th ...

Changing the engine quality settings will cause the editor to crash

UE - Graphics Features - Feb 27, 2020

Changing the engine quality settings to low or medium will cause the editor to crash  This was tested in 4.24.3 @ CL 11590231 and doesn't occur, so this is marked as a regression.  Mac Environme ...

Crash on Mac on exit.

Media Framework - Aug 17, 2020

A licensee reported trouble with a crash on exit on Mac. They discovered that the file AvfMediaPlayer.cpp, on the function Open there is this piece of code:// Force the AV player to not be able to ...