Calling Get Material Index node with an invalid slot name will produce a return value of -1. Passing this value to a Get Material node causes the editor to crash.
Result:
Editor crashes at PIE
Expected:
Get Material Index node warns that slot name is invalid or return value is negative when blueprint is compiled.
LoginId:7156c35640f86204e61b8383f45dee17 EpicAccountId:e8c7fa630b6440f69a25a2c64d6c482c Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build\++UE4+Release-4.15+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 633] Array index out of bounds: -1 from an array of size 0 UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UE4Editor_Engine!USkinnedMeshComponent::GetMaterial() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\components\skinnedmeshcomponent.cpp:705] UE4Editor_Engine!UPrimitiveComponent::execGetMaterial() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\classes\components\primitivecomponent.h:118] UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4525] UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:721] UE4Editor_CoreUObject!UObject::execVirtualFunction() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2255] UE4Editor_CoreUObject!UObject::ProcessContextOpcode() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2149] UE4Editor_CoreUObject!UObject::execLetObj() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1984] UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:948] UE4Editor_CoreUObject!UObject::CallFunction() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:845] UE4Editor_CoreUObject!UObject::execVirtualFunction() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:2255] UE4Editor_CoreUObject!UObject::ProcessInternal() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:948] UE4Editor_CoreUObject!UFunction::Invoke() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:4525] UE4Editor_CoreUObject!UObject::ProcessEvent() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1318] UE4Editor_Engine!AActor::ProcessEvent() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\actor.cpp:678] UE4Editor_Engine!AActor::ReceiveBeginPlay() UE4Editor_Engine!AActor::BeginPlay() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\actor.cpp:3129] UE4Editor_Engine!AActor::DispatchBeginPlay() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\actor.cpp:3097] UE4Editor_Engine!AWorldSettings::NotifyBeginPlay() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\worldsettings.cpp:183] UE4Editor_Engine!AGameStateBase::HandleBeginPlay() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\gamestatebase.cpp:177] UE4Editor_Engine!UWorld::BeginPlay() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\world.cpp:3435] UE4Editor_Engine!UGameInstance::StartPlayInEditorGameInstance() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\engine\private\gameinstance.cpp:338] UE4Editor_UnrealEd!UEditorEngine::CreatePIEGameInstance() [d:\build\++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\playlevel.cpp:3420] UE4Editor_UnrealEd!UEditorEngine::PlayInEditor() [d:\build\++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\playlevel.cpp:2515] UE4Editor_UnrealEd!UEditorEngine::StartQueuedPlayMapRequest() [d:\build\++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\playlevel.cpp:1215] UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\build\++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\editorengine.cpp:1522] UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\build\++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\unrealedengine.cpp:391] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3025] UE4Editor!GuardedMain() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\launch.cpp:166] UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UE4Editor!WinMain() [d:\build\++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264] kernel32 ntdll
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Head over to the existing Questions & Answers thread and let us know what's up.
| 1 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.14.3, 4.15 |
| Target Fix | 4.16 |
| Fix Commit | 3310155 |
|---|---|
| Main Commit | 3357449 |
| Created | Feb 8, 2017 |
|---|---|
| Resolved | Feb 17, 2017 |
| Updated | Apr 27, 2018 |
| 3231 - projectgheist |