Download the licensee repro here - [Link Removed]
Open in 4.27, attempt to open MI_UI_MC_Ceiling_pillar_8x8_01a, it will crash.
Assertion failed: !ParentLayerIndices.Contains(ParentLayerIndex) [File:D:/Unreal/UE4_Release-4.27/Engine/Source/Runtime/Engine/Private/Materials/MaterialExpressions.cpp] [Line: 13167] UE4Editor.exe has triggered a breakpoint.
> UE4Editor-Engine.dll!FMaterialLayersFunctions::ResolveParent(const FMaterialLayersFunctions & Parent, TArray<int,TSizedDefaultAllocator<32>> & OutRemapLayerIndices) Line 13167 C++ UE4Editor-Engine.dll!UMaterialInstance::UpdateParameters() Line 601 C++ UE4Editor-Engine.dll!UMaterialInstance::UpdateParameterNames() Line 4013 C++ UE4Editor-UnrealEd.dll!UMaterialEditorInstanceConstant::RegenerateArrays() Line 1164 C++ UE4Editor-UnrealEd.dll!UMaterialEditorInstanceConstant::SetSourceInstance(UMaterialInstanceConstant * MaterialInterface) Line 1753 C++ UE4Editor-MaterialEditor.dll!FMaterialInstanceEditor::InitMaterialInstanceEditor(const EToolkitMode::Type Mode, const TSharedPtr<IToolkitHost,0> & InitToolkitHost, UObject * ObjectToEdit) Line 376 C++ UE4Editor-MaterialEditor.dll!FMaterialEditorModule::CreateMaterialInstanceEditor(const EToolkitMode::Type Mode, const TSharedPtr<IToolkitHost,0> & InitToolkitHost, UMaterialInstance * MaterialInstance) Line 105 C++ UE4Editor-AssetTools.dll!FAssetTypeActions_MaterialInstanceConstant::OpenAssetEditor(const TArray<UObject *,TSizedDefaultAllocator<32>> & InObjects, TSharedPtr<IToolkitHost,0> EditWithinLevelEditor) Line 39 C++ UE4Editor-UnrealEd.dll!UAssetEditorSubsystem::OpenEditorForAsset(UObject * Asset, const EToolkitMode::Type ToolkitMode, TSharedPtr<IToolkitHost,0> OpenedFromLevelEditor, const bool bShowProgressWindow) Line 363 C++ UE4Editor-UnrealEd.dll!UAssetEditorSubsystem::OpenEditorForAssets_Advanced(const TArray<UObject *,TSizedDefaultAllocator<32>> & InAssets, const EToolkitMode::Type ToolkitMode, TSharedPtr<IToolkitHost,0> OpenedFromLevelEditor) Line 437 C++ UE4Editor-UnrealEd.dll!UAssetEditorSubsystem::OpenEditorForAssets(const TArray<UObject *,TSizedDefaultAllocator<32>> & Assets) Line 553 C++ UE4Editor-ContentBrowserAssetDataSource.dll!ContentBrowserAssetData::EditOrPreviewAssetFileItems(TArrayView<TSharedRef<FContentBrowserAssetFileItemDataPayload const ,0> const ,int> InAssetPayloads, const bool bIsPreview) Line 298 C++ UE4Editor-ContentBrowserAssetDataSource.dll!ContentBrowserAssetData::EditOrPreviewItems(IAssetTools * InAssetTools, const UContentBrowserDataSource * InOwnerDataSource, TArrayView<FContentBrowserItemData const ,int> InItems, const bool bIsPreview) Line 318 C++ [Inline Frame] UE4Editor-ContentBrowserAssetDataSource.dll!ContentBrowserAssetData::EditItems(IAssetTools * InAssetTools, const UContentBrowserDataSource *) Line 323 C++ UE4Editor-ContentBrowserAssetDataSource.dll!UContentBrowserAssetDataSource::BulkEditItems(TArrayView<FContentBrowserItemData const ,int> InItems) Line 1030 C++ UE4Editor-ContentBrowser.dll!SContentBrowser::OnItemsActivated(TArrayView<FContentBrowserItem const ,int> ActivatedItems, EAssetTypeActivationMethod::Type ActivationMethod) Line 2281 C++ [Inline Frame] UE4Editor-ContentBrowser.dll!Invoke(void(SContentBrowser::*)(TArrayView<FContentBrowserItem const ,int>, EAssetTypeActivationMethod::Type)) Line 65 C++ [Inline Frame] UE4Editor-ContentBrowser.dll!UE4Tuple_Private::TTupleBase<TIntegerSequence<unsigned int>>::ApplyAfter(void(SContentBrowser::*)(TArrayView<FContentBrowserItem const ,int>, EAssetTypeActivationMethod::Type) &) Line 306 C++ UE4Editor-ContentBrowser.dll!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,void __cdecl(TArrayView<FContentBrowserItem const ,int>,enum EAssetTypeActivationMethod::Type),FDefaultDelegateUserPolicy>::Execute(TArrayView<FContentBrowserItem const ,int> <Params_0>, EAssetTypeActivationMethod::Type <Params_1>) Line 290 C++ [Inline Frame] UE4Editor-ContentBrowser.dll!TDelegate<void __cdecl(TArrayView<FContentBrowserItem const ,int>,enum EAssetTypeActivationMethod::Type),FDefaultDelegateUserPolicy>::Execute(TArrayView<FContentBrowserItem const ,int>) Line 580 C++ UE4Editor-ContentBrowser.dll!SAssetView::OnListMouseButtonDoubleClick(TSharedPtr<FAssetViewItem,0> AssetItem) Line 3548 C++ [Inline Frame] UE4Editor-ContentBrowser.dll!Invoke(void(SAssetView::*)(TSharedPtr<FAssetViewItem,0>)) Line 65 C++ [Inline Frame] UE4Editor-ContentBrowser.dll!UE4Tuple_Private::TTupleBase<TIntegerSequence<unsigned int>>::ApplyAfter(void(SAssetView::*)(TSharedPtr<FAssetViewItem,0>) &) Line 306 C++ UE4Editor-ContentBrowser.dll!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr<FAssetViewItem,0>),FDefaultDelegateUserPolicy>::ExecuteIfSafe(TSharedPtr<FAssetViewItem,0> <Params_0>) Line 307 C++ UE4Editor-ContentBrowser.dll!TDelegate<void __cdecl(TSharedPtr<FAssetViewItem,0>),FDefaultDelegateUserPolicy>::ExecuteIfBound<void,0>(TSharedPtr<FAssetViewItem,0> <Params_0>) Line 599 C++ UE4Editor-ContentBrowser.dll!SListView<TSharedPtr<FAssetViewItem,0>>::Private_OnItemDoubleClicked(TSharedPtr<FAssetViewItem,0> TheItem) Line 1074 C++ UE4Editor-ContentBrowser.dll!STableRow<TSharedPtr<FAssetViewItem,0>>::OnMouseButtonDoubleClick(const FGeometry & InMyGeometry, const FPointerEvent & InMouseEvent) Line 461 C++ [Inline Frame] UE4Editor-Slate.dll!FSlateApplication::RoutePointerDoubleClickEvent::__l2::<lambda_2b5148752c2a272000c47b69ff14a42e>::operator()(const FArrangedWidget &) Line 5299 C++ UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_2b5148752c2a272000c47b69ff14a42e>>(FSlateApplication * ThisApplication, FEventRouter::FBubblePolicy RoutingPolicy, FPointerEvent EventCopy, const FSlateApplication::RoutePointerDoubleClickEvent::__l2::<lambda_2b5148752c2a272000c47b69ff14a42e> & Lambda, ESlateDebuggingInputEvent DebuggingInputEvent) Line 378 C++ UE4Editor-Slate.dll!FSlateApplication::RoutePointerDoubleClickEvent(const FWidgetPath & WidgetsUnderPointer, const FPointerEvent & PointerEvent) Line 5297 C++ UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonDoubleClickEvent(const TSharedPtr<FGenericWindow,0> & PlatformWindow, const FPointerEvent & InMouseEvent) Line 5284 C++ UE4Editor-Slate.dll!FSlateApplication::OnMouseDoubleClick(const TSharedPtr<FGenericWindow,0> & PlatformWindow, const EMouseButtons::Type Button, const FVector2D CursorPos) Line 5247 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessDeferredMessage(const FDeferredWindowsMessage & DeferredMessage) Line 2209 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::DeferMessage(TSharedPtr<FWindowsWindow,0> & NativeWindow, HWND__ * InHWnd, unsigned int InMessage, unsigned __int64 InWParam, __int64 InLParam, int MouseX, int MouseY, unsigned int RawInputFlags) Line 2698 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::ProcessMessage(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 1881 C++ [Inline Frame] UE4Editor-ApplicationCore.dll!WindowsApplication_WndProc(HWND__ *) Line 899 C++ UE4Editor-ApplicationCore.dll!FWindowsApplication::AppWndProc(HWND__ * hwnd, unsigned int msg, unsigned __int64 wParam, __int64 lParam) Line 905 C++ user32.dll!UserCallWinProcCheckWow() Unknown user32.dll!DispatchMessageWorker() Unknown [Inline Frame] UE4Editor-ApplicationCore.dll!WinPumpMessages() Line 103 C++ UE4Editor-ApplicationCore.dll!FWindowsPlatformApplicationMisc::PumpMessages(bool bFromMainLoop) Line 125 C++ UE4Editor.exe!FEngineLoop::Tick() Line 4848 C++ [Inline Frame] UE4Editor.exe!EngineTick() Line 62 C++ UE4Editor.exe!GuardedMain(const wchar_t * CmdLine) Line 178 C++ UE4Editor.exe!LaunchWindowsStartup(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow, const wchar_t * CmdLine) Line 262 C++ UE4Editor.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * pCmdLine, int nCmdShow) Line 320 C++ [Inline Frame] UE4Editor.exe!invoke_main() Line 102 C++ UE4Editor.exe!__scrt_common_main_seh() Line 288 C++ kernel32.dll!BaseThreadInitThunk () Unknown ntdll.dll!RtlUserThreadStart () Unknown
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-116569 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.27 |
| Target Fix | 4.27 |
| Created | May 26, 2021 |
|---|---|
| Resolved | May 27, 2021 |
| Updated | Dec 1, 2022 |