Unreal Engine Issues and Bug Tracker (UE-12187)

Developer Notes

No longer occurs in latest builds

Description

Crash on clearing or setting the second or third material slot in the Static Mesh Editor on an imported combined FBX Mesh.

Also Reproduced in Main Promotable-CL-2484152 (Perforce)

NOTE: User is on the Promoted Build Branch from GitHub, tested with the GitHub version of the Editor and Main Perforce Builds

Steps to Reproduce

Open QAGame Editor
Import Attached SM_ThreeShapes.fbx with Combined Meshes checked true
Open newly imported Mesh in Static Mesh Editor
In Element 1, place a new material

RESULTS: CRASH to Desktop

EXPECTED: New Material chosen for Element 1

Callstack

Assertion failed: Info.MaterialIndex == SlotIndex [Link Removed] [Line: 1257]

KERNELBASE.dll

{0x000007fefcea940d}

+ 0 bytes
UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize()

{0x000007feb915b5f4}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-Core.dll!FOutputDevice::Logf__VA()

{0x000007feb8fa5778}

+ 159 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-Core.dll!FDebug::AssertFailed()

{0x000007feb8f83832}

+ 65 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-StaticMeshEditor.dll!FMeshSectionSettingsLayout::OnMaterialChanged()

{0x000007fea5a3d820}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\st
UE4Editor-StaticMeshEditor.dll!TBaseSPMethodDelegateInstance<0,FMeshSectionSettingsLayout,0,TTypeWrapper<void> __cdecl(UMaterialInterface * __ptr64,UMaterialInterface * __ptr64,int,bool)>::Execute()

{0x000007fea5a13dae}

+ 53 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-StaticMeshEditor.dll!TBaseSPMethodDelegateInstance<0,FMeshSectionSettingsLayout,0,void __cdecl(UMaterialInterface * __ptr64,UMaterialInterface * __ptr64,int,bool)>::ExecuteIfSafe()

{0x000007fea5a1561e}

+ 29 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!FMaterialItemView::ReplaceMaterial()

{0x000007feb2ff233b}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\pr
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,FMaterialItemView,0,TTypeWrapper<void> __cdecl(FAssetData const & __ptr64)>::Execute()

{0x000007feb2f6ca37}

+ 14 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,FMaterialItemView,0,void __cdecl(FAssetData const & __ptr64)>::ExecuteIfSafe()

{0x000007feb2f6f09c}

+ 11 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!SPropertyEditorAsset::SetValue()

{0x000007feb3159ad6}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\pr
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SPropertyEditorAsset,0,TTypeWrapper<void> __cdecl(FAssetData const & __ptr64)>::Execute()

{0x000007feb30e099c}

+ 35 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SPropertyEditorAsset,0,void __cdecl(FAssetData const & __ptr64)>::ExecuteIfSafe()

{0x000007feb30e3cdc}

+ 11 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!SPropertyMenuAssetPicker::OnAssetSelected()

{0x000007feb31183d6}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\pr
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SPropertyMenuAssetPicker,0,TTypeWrapper<void> __cdecl(FAssetData const & __ptr64)>::Execute()

{0x000007feb30e158c}

+ 35 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-PropertyEditor.dll!TBaseSPMethodDelegateInstance<0,SPropertyMenuAssetPicker,0,void __cdecl(FAssetData const & __ptr64)>::ExecuteIfSafe()

{0x000007feb30e443c}

+ 11 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-ContentBrowser.dll!SAssetView::AssetSelectionChanged()

{0x000007feaa4c74de}

+ 141 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\editor\co
UE4Editor-ContentBrowser.dll!TBaseSPMethodDelegateInstance<0,SAssetView,0,TTypeWrapper<void> __cdecl(TSharedPtr<FAssetViewItem,0>,enum ESelectInfo::Type)>::Execute()

{0x000007feaa532a4a}

+ 55 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-ContentBrowser.dll!TBaseSPMethodDelegateInstance<0,SAssetView,0,void __cdecl(TSharedPtr<FAssetViewItem,0>,enum ESelectInfo::Type)>::ExecuteIfSafe()

{0x000007feaa53ef35}

+ 40 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-ContentBrowser.dll!TBaseDelegate<void,TSharedPtr<FAssetViewItem,0>,enum ESelectInfo::Type>::ExecuteIfBound()

{0x000007feaa53c131}

+ 41 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-ContentBrowser.dll!SListView<TSharedPtr<FAssetViewItem,0> >::Private_SignalSelectionChanged()

{0x000007feaa5e8b35}

+ 33 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-ContentBrowser.dll!STableRow<TSharedPtr<FAssetViewItem,0> >::OnMouseButtonUp()

{0x000007feaa5d3650}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-Slate.dll!<lambda_de96dc3471181973108233c6db1f9843>::operator()()

{0x000007feb57c639c}

+ 24 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-Slate.dll!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_de96dc3471181973108233c6db1f9843> >()

{0x000007feb577c967}

+ 21 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent()

{0x000007feb5839c5e}

+ 78 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-Slate.dll!FSlateApplication::OnMouseUp()

{0x000007feb5826fc9}

+ 16 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\s
UE4Editor-Core.dll!FWindowsApplication::ProcessDeferredMessage()

{0x000007feb90a0f02}

+ 12 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-Core.dll!FWindowsApplication::DeferMessage()

{0x000007feb908ed1c}

+ 74 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-Core.dll!FWindowsApplication::ProcessMessage()

{0x000007feb90a23f6}

+ 44 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor-Core.dll!FWindowsApplication::AppWndProc()

{0x000007feb908b4c3}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
USER32.dll

{0x0000000076d89bd1}

+ 0 bytes
USER32.dll

{0x0000000076d898da}

+ 0 bytes
UE4Editor-Core.dll!FWindowsPlatformMisc::PumpMessages()

{0x000007feb9154ff6}

+ 48 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\c
UE4Editor.exe!FEngineLoop::Tick()

{0x000000013fa76c3f}

+ 8 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\l
UE4Editor.exe!GuardedMain()

{0x000000013fa6758c}

+ 0 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\l
UE4Editor.exe!GuardedMainWrapper()

{0x000000013fa6760a}

+ 5 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\l
UE4Editor.exe!WinMain()

{0x000000013fa7a278}

+ 17 bytes [d:\buildfarm\buildmachine_++depot+ue4\engine\source\runtime\l
UE4Editor.exe!__tmainCRTStartup()

{0x000000013fa7b2a9}

+ 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll

{0x0000000076c659ed}

+ 0 bytes
ntdll.dll

{0x0000000076e9c541} + 0 bytes
ntdll.dll {0x0000000076e9c541}

+ 0 bytes

Community References

[4.8] Importing FBX and combining meshes not working in promoted branch (commit 7cf4d6f26d74194c2a53fcb8fd41b8e5c6ef02d4)

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Cannot Reproduce

Component	Tools
Affects Versions	4.8
Target Fix	4.8

Fix Commit	2508269

Created	Mar 19, 2015
Resolved	Apr 10, 2015
Updated	Apr 27, 2018

UE-12187

Crash on setting Material in Element 1 of Combined Mesh

Crash on setting Material in Element 1 of Combined Mesh

Developer Notes

Have Comments or More Details?