In Action RPG Sample, NPC Blueprints "NPC_Goblin_Level_01,02.03" cannot be Duplicated. Crash results lead to ARPGCharacterBase.Cpp Get Health function.
float ARPGCharacterBase::GetHealth() const { return AttributeSet->GetHealth(); }
No Null check exists.
Result: Null Error crash in Action Rpg Character Base.
Expected: Successful duplication of Blueprint.
Access violation - code c0000005 (first/second chance not available) UE4Editor_GameplayAbilities!FGameplayAttributeData::GetCurrentValue() [d:\build\++ue4\sync\engine\plugins\runtime\gameplayabilities\source\gameplayabilities\private\attributeset.cpp:35] UE4Editor_ActionRPG!ARPGCharacterBase::execGetHealth() [d:\build\++ue4\sync\localbuilds\actionrpg\windows\source\actionrpg\public\rpgcharacterbase.h:21] UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4861] UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:816] UE4Editor_CoreUObject!UObject::execVirtualFunction() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2436] UE4Editor_CoreUObject!UObject::execLet() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2116] UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1031] UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:940] UE4Editor_CoreUObject!UObject::execVirtualFunction() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2436] UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2330] UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1031] UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:940] UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1031] UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4861] UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1480] UE4Editor_Engine!UAnimInstance::BlueprintUpdateAnimation() [d:\build\++ue4\sync\engine\intermediate\build\win64\ue4editor\inc\engine\animinstance.gen.cpp:670] UE4Editor_Engine!UAnimInstance::UpdateAnimation() [d:\build\++ue4\sync\engine\source\runtime\engine\private\animation\animinstance.cpp:447] UE4Editor_Engine!USkeletalMeshComponent::TickAnimation() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:1019] UE4Editor_Engine!USkeletalMeshComponent::InitAnim() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:675] UE4Editor_Engine!USkeletalMeshComponent::OnRegister() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\skeletalmeshcomponent.cpp:526] UE4Editor_Engine!UActorComponent::ExecuteRegisterEvents() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\actorcomponent.cpp:1250] UE4Editor_Engine!UActorComponent::RegisterComponentWithWorld() [d:\build\++ue4\sync\engine\source\runtime\engine\private\components\actorcomponent.cpp:987] UE4Editor_Engine!AActor::IncrementalRegisterComponents() [d:\build\++ue4\sync\engine\source\runtime\engine\private\actor.cpp:4234] UE4Editor_Engine!AActor::RegisterAllComponents() [d:\build\++ue4\sync\engine\source\runtime\engine\private\actor.cpp:4133] UE4Editor_Engine!AActor::PostSpawnInitialize() [d:\build\++ue4\sync\engine\source\runtime\engine\private\actor.cpp:2910] UE4Editor_Engine!UWorld::SpawnActor() [d:\build\++ue4\sync\engine\source\runtime\engine\private\levelactor.cpp:467] UE4Editor_Engine!UWorld::SpawnActor() [d:\build\++ue4\sync\engine\source\runtime\engine\private\levelactor.cpp:295] UE4Editor_UnrealEd!FClassActorThumbnailScene::SpawnPreviewActor() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\thumbnailhelpers.cpp:1050] UE4Editor_UnrealEd!UBlueprintThumbnailRenderer::Draw() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\thumbnailrendering\blueprintthumbnailrenderer.cpp:88] UE4Editor_UnrealEd!ThumbnailTools::RenderThumbnail() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\objecttools.cpp:3857] UE4Editor_UnrealEd!FAssetThumbnailPool::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\assetthumbnail.cpp:1039] UE4Editor_UnrealEd!FTickableEditorObject::TickObjects() [d:\build\++ue4\sync\engine\source\editor\unrealed\public\tickableeditorobject.h:45] UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editorengine.cpp:1517] UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:403] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3699] UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:174] UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:145] UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:276] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283] kernel32 ntdll
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-74701 in the post.