Crash when spawning actor with no viewport initialized

UE - Editor - Workflow Systems - Nov 22, 2023

If an attempt to spawn an actor is made before the Level Editor Viewport is fully initialized (i.e. before it has had a chance to get rendered at least once), and that actor has no specific Factory ...

[CrashReport] Linux crash - FMonitoredProcess::Launch()

UE - Platform - Linux - Sep 14, 2017

This is an infrequent Linux crash occurring in 4.17.1. Callstack from Log[2017.09.06-15.26.30:028][666]LogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/***/.local/ ...

Error when exporting OBJ unattended

UE - Editor - Content Pipeline - Import and Export - Dec 1, 2020

When doing an unattended OBJ export with python. The export will fail and give the atteched callstack. ...

UCS continuously runs while a blueprint's thumbnail in content browser is focused

UE - Editor - Content Pipeline - Content Browser - May 18, 2016

Blueprints with a mesh call the UCS continuously when focusing the thumbnail in the content browser. This is easily visible with a Print String in the UCS causing log spam. This does not occur in ...

Importing Camera FBX into a sequence can crash with a headless editor

UE - Anim - Sequencer - Mar 19, 2021

In a headless editor instance we will not be able to send toasts to the user, and we should not notify slate. The Sequencer Tools function library calls MovieSceneToolHelpers::ImportFBXCameraToExist ...

Crash in blueprints when opening right-click menu

UE - Gameplay - Blueprint - Apr 22, 2015

Right clicking inside the event graph of a blueprint that is derived from PhysicsCollisionHandler will crash the editor CrashReporter: [Link Removed] ...

Make FBX scene importer available in python

UE - Editor - Content Pipeline - Import and Export - Mar 17, 2020

Its important to allow import scripting workflow ...

Crash calling user-function in non-editor

Tools - Apr 27, 2020

Crash occurs when attempting to call native Pre-Construct in the attached project. ...

Performance issues with World Composition

Tools - Dec 14, 2015

Licensee reports performance issues with ULevelStreaming::GetWorldAssetPackageFName, repeatedly constructing an FName for every sublevel. Should cache this. ...

Game mode Login event called before GameMode BeginPlay

UE - Networking - Feb 23, 2016

Code / blueprint script for game mode login functions executes before the game mode begin play function. ...