Description

The editor is crashing when attempting to hide a bone using the Hide Bone by Name node after using the Set Master Pose Component.

Steps to Reproduce
  1. Open the editor in a First Person Project
  2. Open the First Person Character
  3. Recreate the blueprint in the attached screenshot
  4. Compile & Save
  5. PIE

Result: Editor Crashes

Callstack

Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 833] Array index out of bounds: 4 from an array of size 0

UE4Editor_Engine!USkeletalMeshComponent::HideBone() skeletalmeshcomponent.cpp:1665 
UE4Editor_Engine!USkinnedMeshComponent::HideBoneByName() skinnedmeshcomponent.cpp:1887 
UE4Editor_Engine!USkinnedMeshComponent::execHideBoneByName() skinnedmeshcomponent.h:136 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:697 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2126 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:821 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:922 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4280 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1305 
UE4Editor_Engine!AActor::ProcessEvent() actor.cpp:646 
UE4Editor_Engine!AActor::BeginPlay() actor.cpp:3012 
UE4Editor_Engine!AWorldSettings::NotifyBeginPlay() worldsettings.cpp:175 
UE4Editor_Engine!AGameMode::HandleMatchHasStarted() gamemode.cpp:630 
UE4Editor_Engine!AGameMode::SetMatchState() gamemode.cpp:742 
UE4Editor_Engine!AGameMode::StartMatch() gamemode.cpp:607 
UE4Editor_Engine!UWorld::BeginPlay() world.cpp:3240 
UE4Editor_Engine!UGameInstance::StartPIEGameInstance() gameinstance.cpp:283 
UE4Editor_UnrealEd!UEditorEngine::CreatePIEGameInstance() playlevel.cpp:3315 
UE4Editor_UnrealEd!UEditorEngine::PlayInEditor() playlevel.cpp:2426 
UE4Editor_UnrealEd!UEditorEngine::StartQueuedPlayMapRequest() playlevel.cpp:1141 
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1306 
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:371 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2834 
UE4Editor!GuardedMain() launch.cpp:156 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown> 

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Fixed
ComponentGameplay
Affects Versions4.124.134.15
Target Fix4.14
Fix Commit3166740
Release Commit3166740
CreatedOct 18, 2016
ResolvedOct 18, 2016
UpdatedApr 27, 2018