App crashes on launch when packaged for Vulkan with Scalable 2D/3D

UE - Platform - Mobile - Nov 4, 2016

No Vulkan SDK was installed Crashed on a Nexus 6P ...

After importing morph target: Ensure condition failed: Referencing SkeletalRenderGPUSkin.cpp

Tools - Sep 23, 2017

Hit handled ensure when dragging the slider in Morph Target PreviewLogOutputDevice: Error: Ensure condition failed: DynamicData->MorphTargetWeights.Num() == LODModel.MorphTargetVertexInfoBuffers.Get ...

Editor Crashes After Building Lighting with Blueprint Set to Native Parent Class: Light

UE - Graphics Features - Oct 26, 2017

Whenever a Blueprint set to Native Parent Class: Light is placed into a level, Editor crashes after building lighting. The Blueprint does not need to contain an actual light component to crash the e ...

Crash: Nativized AnimBP instances can assert on load in a cooked build with async loading enabled.

UE - Gameplay - Blueprint - May 9, 2019

This is a regression that was introduced alongside a memory optimization for Animation Blueprint assets. Suggested workarounds:Disable "Async Loading Thread Enabled" ORDisable Blueprint nativizati ...

[CrashReport] UnrealEditor-LevelEditor!FViewportClient::InputKey(FInputKeyEventArgs const &) [UnrealClient.h:851]

UE - Editor - Workflow Systems - May 27, 2021

Generated from CrashReporter ...

Crash when quitting the editor with VR Mode enabled

UE - Editor - Workflow Systems - May 25, 2017

Qutting the engine with VR Editor on causes a crash. I could not determine a way to close the VR Editor internally so I terminated the Project by using the Desktop. Many users among the community ...

Crash in FVulkanLinuxPlatform

UE - Platform - Linux - Apr 17, 2019

Using the command in the repro steps on Linux will cause the Editor to crash and CrashReporter to pop up with a callstack. This behaves differently when tried on Windows with -vulkan. The project ...

[AI] Crash in UGameplayDebuggerLocalController::OnDebugDraw

UE - AI - Debugging - Apr 27, 2024

UGameplayDebuggerLocalController::OnDebugDraw crashed with a dereferenced nullptr for CachedReplicator. ...

[AI] SmartObject with Precondition in a persistent collection crashes editor when exiting PIE

UE - AI - SmartObject - Sep 26, 2023

Adding the Precondition to the SmartObject caused an assertion when it was part of a persistent collection. The precondition needs to be able to pass its Activate method to cause the assert. This b ...