Editor crashes on compile with no warning when trying to access information from a "Slot as Canvas Slot" node on tick that has not been set yet by begin play

UE - Editor - UI Systems - Jul 1, 2015

If a user creates a widget variable that is set on begin play and then tries to get information from that widget via the "Slot as Canvas Slot" node on tick the editor will crash. This appears to hap ...

Crash: Changing Material Property Overrides of Material Instance

UE - Graphics Features - Dec 14, 2016

When a material has a static bool parameter AND this is overridden in a material instance, Trying to change Blend Mode or Shading Model under the Material Property Overrides crashes the editor. Thi ...

Editor crashes on Restart after Enabling Pre-Exposure in Project Settings

UE - Graphics Features - Jan 22, 2018

After creating a new project and enabling Pre-Exposure in the Project Settings, the Editor seams to load up on restart fine, but stalls at 95% and the crash callstack appears. ...

Mobile preview crashes in QA-Promotion

UE - LD & Modeling - Terrain - Landscape - Jul 27, 2016

A crash will occur in QA-Promotion when played in Mobile Preview. ...

BP-exposed UGameplayCamerasSubsystem calls can check-crash the editor

UE - Anim - Sequencer - Mar 30, 2023

Any calls to UGameplayCamerasSubsystem's blueprint-callable functions has the potential to crash the UE editor or a game project by using the wrong PlayerController or calling it at the wrong time. ...

Crash when casting to owner from AnimGraph

OLD - Anim - Sep 6, 2016

Crash occurs when casting back to the pawn owner from the Anim Graph. In this case, it is being used for "Copy Pose from Mesh" Workaround: Cast to Owner from Event Graph, defining variable as the ...

Calling Finish Recording Output causes a crash in PIE

UE - Audio - Mar 23, 2020

The Finish Recording Output node from the Audio Mixer BP Library crashes due to an invalid Path input. This is a regression from 4.23.1 (CL-9631420).  This was reported and tested in 4.24.3 (CL-115 ...

iOS App crashes in IAP code when AppStoreConnect agreement is not valid

UE - Online - Nov 1, 2023

From licensee: Their iOS app will "crash when purchasing IOS IAP was caused by the lack of a Paid Apps Legal Agreement setup in AppStoreConnect. It would be nice if we were to get a more graceful fa ...

GPU Crash from invalid SRV in CreateShaderResourceView due to integer underflow

UE - Graphics Features - Ray Tracing - Jan 13, 2025

The GPU crashes after the ray tracing geometry builder attempts to create a shader resource view with an invalid offset. ...

GPU Crash from invalid SRV in CreateShaderResourceView due to integer underflow

UE - Graphics Features - Ray Tracing - Jan 15, 2025

The GPU crashes after the ray tracing geometry builder attempts to create a shader resource view with an invalid offset. ...