Unreal Engine Issues and Bug Tracker (UE-54423)

Description

Engine crashes when asset has been reimported multiple times through the mesh editor
-Editor crashes in Main when reimporting
-Editor crashes in 4.17 when changing the Import Transforms

Steps to Reproduce

Download attached project
Open static mesh SM_grass001
See Transform settings in the Details panel of mesh editor (both Z transforms are set to 100)
Go to Asset < Reimport SM_grass001
Reimport a few times (about 4 or 5)
Note that the grass location changes and eventually resets to its original location
Editor will crash

Expected: Editor does not crash after asset has been reimported multiple times
Results: Editor crashes after asset is reimported multiple times

Callstack

LoginId:bdcd2df1437ec38ad0d19c85e30ff2d1
EpicAccountId:1ed52ca976af4368b6c30d11b7cdc18f

Assertion failed: LightMapCoordinateIndex < (int)GetNumTexCoords() && LightMapCoordinateIndex >= 0 [File:D:\Main Workspace\Engine\Source\Runtime\Engine\Private\Rendering\StaticMeshVertexBuffer.cpp] [Line: 485]

UE4Editor_Core!FDebug::AssertFailed() [d:\main workspace\engine\source\runtime\core\private\misc\assertionmacros.cpp:419]
UE4Editor_Engine!FStaticMeshVertexBuffer::BindLightMapVertexBuffer() [d:\main workspace\engine\source\runtime\engine\private\rendering\staticmeshvertexbuffer.cpp:486]
UE4Editor_Engine!FInstancedStaticMeshRenderData::InitStaticMeshVertexFactories() [d:\main workspace\engine\source\runtime\engine\private\instancedstaticmesh.cpp:610]
UE4Editor_Engine!TGraphTask<TEnqueueUniqueRenderCommandType<`FInstancedStaticMeshRenderData::ReInitVertexFactories'::`2'::CallInitStaticMeshVertexFactoryName,<lambda_419fe0e00f28e07334541444dcd273da> > >::ExecuteTask() [d:\main workspace\engine\source\runtime\core\public\async\taskgraphinterfaces.h:829]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\main workspace\engine\source\runtime\core\private\async\taskgraph.cpp:665]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\main workspace\engine\source\runtime\core\private\async\taskgraph.cpp:574]
UE4Editor_RenderCore!RenderingThreadMain() [d:\main workspace\engine\source\runtime\rendercore\private\renderingthread.cpp:331]
UE4Editor_RenderCore!FRenderingThread::Run() [d:\main workspace\engine\source\runtime\rendercore\private\renderingthread.cpp:465]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\main workspace\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]

LoginId:bdcd2df1437ec38ad0d19c85e30ff2d1
EpicAccountId:1ed52ca976af4368b6c30d11b7cdc18f

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

UE4Editor_Engine!UHierarchicalInstancedStaticMeshComponent::BuildTreeIfOutdated() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\hierarchicalinstancedstaticmesh.cpp:2366]
UE4Editor_Foliage!TBaseRawMethodDelegateInstance<0,FFoliageMeshInfo,void __cdecl(FBoxSphereBounds const & __ptr64)>::ExecuteIfSafe() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:648]
UE4Editor_Engine!TBaseMulticastDelegate<void,FBoxSphereBounds const & __ptr64>::Broadcast() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:937]
UE4Editor_Engine!UStaticMesh::CalculateExtendedBounds() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:2242]
UE4Editor_Engine!UStaticMesh::Build() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmeshbuild.cpp:169]
UE4Editor_Engine!UStaticMesh::PostEditChangeProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:1790]
UE4Editor_CoreUObject!UObject::PostEditChangeChainProperty() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:436]
UE4Editor_PropertyEditor!FPropertyNode::NotifyPostChange() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\propertyeditor\private\propertynode.cpp:2360]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:558]
UE4Editor_PropertyEditor!FPropertyValueImpl::ImportText() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:358]
UE4Editor_PropertyEditor!FPropertyHandleFloat::SetValue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\propertyeditor\private\propertyhandleimpl.cpp:3106]
UE4Editor_DetailCustomizations!FMathStructCustomization::SetValue<float>() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\detailcustomizations\private\mathstructcustomizations.cpp:472]
UE4Editor_DetailCustomizations!FMathStructCustomization::OnValueCommitted<float>() [d:\build\++ue4+release-4.17+compile\sync\engine\source\editor\detailcustomizations\private\mathstructcustomizations.cpp:406]
UE4Editor_DetailCustomizations!TBaseSPMethodDelegateInstance<0,FMathStructCustomization,0,TTypeWrapper<void> __cdecl(float,enum ETextCommit::Type),TWeakPtr<IPropertyHandle,0> >::Execute() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_DetailCustomizations!TBaseSPMethodDelegateInstance<0,FMathStructCustomization,0,void __cdecl(float,enum ETextCommit::Type),TWeakPtr<IPropertyHandle,0> >::ExecuteIfSafe() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_DetailCustomizations!SSpinBox<float>::CommitValue() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\public\widgets\input\sspinbox.h:858]
UE4Editor_DetailCustomizations!SSpinBox<float>::TextField_OnTextCommitted() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\public\widgets\input\sspinbox.h:784]
UE4Editor_DetailCustomizations!TBaseSPMethodDelegateInstance<0,SSpinBox<float>,0,TTypeWrapper<void> __cdecl(FText const & __ptr64,enum ETextCommit::Type)>::Execute() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:327]
UE4Editor_DetailCustomizations!TBaseSPMethodDelegateInstance<0,SSpinBox<float>,0,void __cdecl(FText const & __ptr64,enum ETextCommit::Type)>::ExecuteIfSafe() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:434]
UE4Editor_Slate!FSlateEditableTextLayout::HandleFocusLost() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\widgets\text\slateeditabletextlayout.cpp:697]
UE4Editor_Slate!FSlateApplication::SetUserFocus() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:2795]
UE4Editor_Slate!FSlateApplication::SetUserFocus() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:2497]
UE4Editor_Slate!FSlateApplication::ProcessReply() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3191]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FPointerEvent,<lambda_7097b900f0e4be30d80fb18f98c51ea0> >() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:233]
UE4Editor_Slate!FSlateApplication::RoutePointerDownEvent() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5093]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonDownEvent() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5050]
UE4Editor_Slate!FSlateApplication::OnMouseDown() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4968]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:1726]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:2161]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:881]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:721]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3151]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.17+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:253]
kernel32
ntdll

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

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

How can i modify the param name in EQS node

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 ?

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

What method is used to fill polygonal regions when drawing spline mesh at run time?

Bullet replication problem. The players sees each other but does not see the bullet

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-54423 in the post.

6	Login to Vote

Fixed

Component	UE - World Creation - Worldbuilding Tools - Foliage
Affects Versions	4.17.2, 4.18.3, 4.19, 4.20
Target Fix	4.19

Fix Commit	3897036
Main Commit	3990065
Release Commit	3897036

Created	Jan 24, 2018
Resolved	Feb 19, 2018
Updated	Apr 27, 2018

View Jira Issue

UE-54423

Crash Occurs When Mesh is Reimported Multiple Times in the Mesh Editor

Crash Occurs When Mesh is Reimported Multiple Times in the Mesh Editor

Have Comments or More Details?