Adding a code class to a blueprint project causes the editor to crash

UE - Foundation - Core - Oct 5, 2017

Adding a code class to a blueprint project causes the editor to crash after attempting to hot reload. This only occurs for a fully bluprint project, code projects or BP projects that have already h ...

Crash assigning static mesh to LightWeightInstanceStaticMeshManager

UE - Gameplay - May 21, 2021

Crash occurs when the user assigns a static to the Instanced Static Mesh Component in a LightWeightInstanceStaticMeshManager. I couldn't reproduce this with an actor blueprint with an ISMC or HISMC ...

[CrashReport] Linux crash - FVulkanSwapChain::AcquireImageIndex

UE - Platform - Linux - Sep 7, 2017

This is an uncommon Linux crash that has occurred for a few users in 4.17 and 4.18 (not yet released) ...

Creating blueprint based on landscape crashes editor

UE - LD & Modeling - Terrain - Landscape - Aug 24, 2016

If a blueprint is created from a landscape object, the editor will crash. Frequency: 5/5 ...

Crash when moving landscape that contains landscape spline to sub-level

UE - LD & Modeling - Terrain - Landscape - Aug 4, 2017

Crash when moving landscape that contains a landscape spline to another sub-level. User Description: The Editor crashes on copy and pasting a landscape spline over to another Level. Always rememb ...

Engine crashed during Animation Blueprint compilation with Blend Multi node

OLD - Anim - Nov 30, 2018

Engine crashes if Blend Multi node output is connected to final transition node, and no input is connected to Blend Multi node input parameters. [Image Removed] ...

Exception Crash When Moving Files

Tools - Apr 8, 2020

Moving files to a sub-folder crashes the editor. ...

Crash when creating nested child actors

UE - Gameplay - Blueprint Compiler - Aug 18, 2020

Setting the root of the furthest child actor results in a crash after pressing compile on the blueprint. Example project: [Link Removed] ...

Switch on custom enum causes compilation errors after Hot Reload

UE - Foundation - Core - Sep 28, 2015

If the project is hot reloaded while a Switch on Enum is inside of a blueprint which is switching on a custom enum, the switch will become corrupted. It changes the 'selection' pin to take a Byte pa ...

"StaticFindFirstObject: Ambiguous object name" on delegates with timelines in packed level actors

UE - World Creation - Worldbuilding Tools - Level Instances - Jan 31, 2024