Replacing blueprint assets causes editor to crash

UE - Gameplay - Blueprint - Jun 1, 2015

When attempting to replace references of one blueprint with another a number of error message windows pop up ([Link Removed]) and the editor will crash. This is a regression since it was working in ...

Crash when opening a packaged code project for Win64 in shipping configuration

UE - Simulation - Physics - Aug 5, 2016

Code projects packaged for Win64 in shipping configuration are crashing on launch. This does Not happen for Blueprint projects This does Not happen when packaged in Development or DebugGame configu ...

Face Normals are Locked to the Direction They Face on Import with Alembic

UE - Editor - Content Pipeline - Import and Export - Jan 5, 2018

Normals do not stay with the face of the asset that has been imported using Alembic whle animating -use import settings for documentation and check Recompute Normals and Force One Smoothing Group P ...

Crash Upon Opening Project in 4.7 preview 5

UE - Foundation - Core - Feb 4, 2015

The user claims to have converted his project with each new version of the engine starting from 4.2. Comments left in crash reporter "Tried to open project" Creating bug for tracking purposes unti ...

Adding a new widget class to a 3D widget causes a crash

UE - Editor - UI Systems - Jan 2, 2015

When clicking the button to add a new class to a widget component via the [+] button the engine will crash ...

Crash when editing FRuntimeFloatCurve's curve from sequencer's edit key window

UE - Anim - Sequencer - Mar 31, 2023

Crash when editing a FRuntimeFloatCurve curve exposed through EventTrack or a self-made Struct from the sequencer key edit window. FRuntimeFloatCurve does not support Expose to Cinematic, so this m ...

Crash when using both tessellation and virtual texture on a landscape material

UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020

When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...

Compiling blueprint with anim bp crashes editor in MathExpr exec

UE - Gameplay - Blueprint - Jan 30, 2016

Compiling a player character blueprint that is tied to an anim bp crashes the editor. Frequency: 2/2 Crashreporter: N/A ...

Niagara crashes with skeletal mesh sampling in GPU system in Vulkan

UE - Niagara - Sep 17, 2019

Switching over to GPUCompute with Skeletal mesh surface sampling will crash in Vulkan. This does not occur with CPU sims or in D3D. When testing with D3D I would get the same Niagara compile warning ...

Crash opening Child/Grandchild Blueprint after updating to 4.18

UE - Gameplay - Blueprint - Nov 29, 2017

From this UDN: https://answers.unrealengine.com/questions/718928/4180-editor-crash-while-opening-child-blueprint.html Crash occurs when opening child (or in the repro case, grandchild) blueprints a ...