Crash repros in 4.19.2 and Main CL 4088075. Triggering the crash can be inconsistent- you may have to assign the material instance to a mesh, force shaders to recompile, save, and continue toggling Static Switch Params on and off. See attached logs and callstack from licensee.
Per Licensee:
Whilst using the material layering feature, UE4 crashes. This happens when trying to edit a material instance and it seems to have an issue with a parameter collection that's used with one of materials within the blend. What's interesting is that it only happens on my PC, not on another with the same specs and project.
Result: Engine Crash (see attached GIF)
LoginId:77ac66cf4b506a51a458c382c4ec63c2 EpicAccountId:5caf2c99925243e8b9b1bdcc9cd0e6cf Assertion failed: !bDeletedThroughDeferredCleanup [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShader.cpp] [Line: 2075] UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419] UE4Editor_Engine!FMaterialShaderMap::AddRef() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\materials\materialshader.cpp:2076] UE4Editor_Engine!FMaterial::CacheShaders() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\materials\materialshared.cpp:1673] UE4Editor_Engine!UMaterialInstance::CacheShadersForResources() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\materials\materialinstance.cpp:2487] UE4Editor_Engine!UMaterialInstance::CacheResourceShadersForRendering() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\materials\materialinstance.cpp:2413] UE4Editor_Engine!UMaterialInstance::UpdateStaticPermutation() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\materials\materialinstance.cpp:3367] UE4Editor_UnrealEd!UMaterialEditorInstanceConstant::CopyToSourceInstance() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\previewmaterial.cpp:1349] UE4Editor_UnrealEd!UMaterialEditorInstanceConstant::PostEditChangeProperty() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\previewmaterial.cpp:834] UE4Editor_CoreUObject!UObject::PostEditChangeChainProperty() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:436] UE4Editor_PropertyEditor!FPropertyNode::NotifyPostChange() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\propertyeditor\private\propertynode.cpp:2393] UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:570] UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:358] UE4Editor_PropertyEditor!FPropertyHandleBool::SetValue() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:3570] UE4Editor_PropertyEditor!SPropertyEditorBool::OnCheckStateChanged() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\propertyeditor\private\userinterface\propertyeditor\spropertyeditorbool.cpp:79] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,TTypeWrapper<void> __cdecl(enum ECheckBoxState)>::Execute() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:269] UE4Editor_PropertyEditor!TBaseSPMethodDelegateInstance<0,SPropertyEditorBool,0,void __cdecl(enum ECheckBoxState)>::ExecuteIfSafe() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:345] UE4Editor_Slate!SCheckBox::ToggleCheckedState() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:299] UE4Editor_Slate!SCheckBox::OnMouseButtonUp() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\widgets\input\scheckbox.cpp:190] UE4Editor_Slate!<lambda_1002768c627006711ef2f351a87ec0e7>::operator()() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5440] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:266] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5429] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5927] UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5907] UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1726] UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2172] UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:889] UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:726] user32 user32 UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:129] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3263] UE4Editor!GuardedMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launch.cpp:166] UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144] UE4Editor!WinMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253] kernel32 ntdll
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-59528 in the post.
| 17 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.19.2, 4.20 |
| Created | May 23, 2018 |
|---|---|
| Resolved | Oct 12, 2018 |
| Updated | Oct 9, 2020 |
| 5131 - enlightdm |