Unreal Engine Issues

UE-48966

[CrashReport] FMaterialEditor::NotifyPostChange()

[CrashReport] FMaterialEditor::NotifyPostChange()

Description

This is a trending crash in the 4.17 release.
Update: also trending in the 4.18 release

User Descriptions

  • Importing new character
  • togled lighting modes on shaders
  • Changing attriubtes on a material
  • Was changing Material end node's blend mode from Translucent to Additive
  • Changing a material to a postprocess type after changing the material type to unlit and the box before that to translucent.
  • Set a material to be transparent instead of opaque

Source Context

 269       #if UCLASS_FAST_ISA_COMPARE_WITH_OUTERWALK || UCLASS_FAST_ISA_IMPL == UCLASS_ISA_OUTERWALK
  270       	bool UObjectBaseUtility::IsA( const UClass* SomeBase ) const
  271       	{
  272       		UE_CLOG(!SomeBase, LogObj, Fatal, TEXT("IsA(NULL) cannot yield meaningful results"));
  273       
  274       		UClass* ThisClass = GetClass();
  275       
  276       		bool bOldResult = false;
  277 ***** 		for ( UClass* TempClass=ThisClass; TempClass; TempClass=TempClass->GetSuperClass() )
  278       		{
  279       			if ( TempClass == SomeBase )
  280       			{
  281       				bOldResult = true;
  282       				break;
  283       			}
  284       		}
Steps to Reproduce

Search in crash reporter suggests this isn't happening anymore. Please reopen if evidence to the contrary is found.

Callstack
Access violation - code c0000005 (first/second chance not available)

UE4Editor_CoreUObject!UObjectBaseUtility::IsA() [uobjectbaseutility.cpp:278]
UE4Editor_MaterialEditor!FMaterialEditor::NotifyPostChange() [materialeditor.cpp:3606]
UE4Editor_PropertyEditor!FPropertyNode::NotifyPostChange() [propertynode.cpp:2421]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [propertyhandleimpl.cpp:558]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [propertyhandleimpl.cpp:358]
UE4Editor_PropertyEditor!FPropertyValueImpl::SetValueAsString() [propertyhandleimpl.cpp:829]
UE4Editor_PropertyEditor!SPropertyEditorCombo::SendToObjects() [spropertyeditorcombo.cpp:252]
UE4Editor_PropertyEditor!SPropertyEditorCombo::OnComboSelectionChanged() [spropertyeditorcombo.cpp:192]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorCombo,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorCombo,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_PropertyEditor!TBaseDelegate<void,TSharedPtr<FString,0>,enum ESelectInfo::Type>::ExecuteIfBound() [delegatesignatureimpl.inl:624]
UE4Editor_PropertyEditor!SPropertyComboBox::OnSelectionChangedInternal() [spropertycombobox.cpp:114]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyComboBox,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyComboBox,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_PropertyEditor!TBaseDelegate<void,TSharedPtr<FString,0>,enum ESelectInfo::Type>::ExecuteIfBound() [delegatesignatureimpl.inl:624]
UE4Editor_PropertyEditor!SComboBox<TSharedPtr<FString,0> >::OnSelectionChanged_Internal() [scombobox.h:455]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SComboBox<TSharedPtr<FString,0> >,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SComboBox<TSharedPtr<FString,0> >,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_PropertyEditor!TBaseDelegate<void,TSharedPtr<FString,0>,enum ESelectInfo::Type>::ExecuteIfBound() [delegatesignatureimpl.inl:624]
UE4Editor_PropertyEditor!SListView<TSharedPtr<FString,0> >::Private_SignalSelectionChanged() [slistview.h:725]
UE4Editor_PropertyEditor!STableRow<TSharedPtr<FString,0> >::OnMouseButtonUp() [stablerow.h:474]
UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator() [slateapplication.cpp:5199]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [slateapplication.cpp:232]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:5188]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5690]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5670]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1718]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2161]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:881]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:721]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3151]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()
Community References

Fix UE-51650

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

I am not able to find world outliner how to enable it?

Undefined sysmbol: typeinfo for AActor when cross-compile linux dedicated server on windows

How can i modify the param name in EQS node

When I open UE4 4.24.3 it appears that. Does anyone know how to solve?

Delay nodes occasionally don't fire the "Completed" output in a nativized build

After I install the program,I open it,but it crashes.And sometimes it turns to the missing of the globalshader...SM4.bin

How to achieve HLSL Multiple Render Target in Material blueprints?

Bonjour j'ai un petit problème c'est que je ne vois plus l'onglet "scability" pour changer les graphismes de uefn et j'ai pas trouvé l'option pour le faire revenir ?

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-48966 in the post.

0
Login to Vote
Fixed
ComponentUE - Rendering Architecture - Materials
Affects Versions4.17, 4.18, 4.19
Target Fix4.24
CreatedAug 29, 2017
ResolvedOct 28, 2019
UpdatedNov 2, 2021
View Jira Issue