Steps to Reproduce

REPRO STEPS:

  1. Load QAGame in the editor
  2. Click Import from the Content Browser
  3. Navigate to \Engine\Content\NotForLicensees\QA\Import_Test_Assets\AlembicAssets and select MaterialImportTest.abc, then click Open
  4. Scroll down and check Create Materials
  5. Click Import
  6. Click Import from the Content Browser again
  7. Navigate to \Engine\Content\NotForLicensees\QA\Import_Test_Assets\AlembicAssets and select MaterialImportTest.abc, then click Open
  8. Click Import

RESULT:
Editor crashes

Callstack
Fatal error: [File:E:\UE4_Release-413\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp] [Line: 168] Renaming an object (Material /Engine/Transient.Prime_HelixSG) on top of an existing object (Material /Game/MaterialImportTest.Prime_HelixSG) is not allowed
UE4Editor_CoreUObject!UObject::Rename() obj.cpp:168 
UE4Editor_AlembicLibrary!FAbcImporter::RetrieveMaterial() abcimporter.cpp:1666 
UE4Editor_AlembicLibrary!FAbcImporter::CreateStaticMeshFromRawMesh() abcimporter.cpp:575 
UE4Editor_AlembicLibrary!FAbcImporter::ImportAsStaticMesh() abcimporter.cpp:644 
UE4Editor_AlembicImporter!UAlembicImportFactory::ImportStaticMesh() alembicimportfactory.cpp:146 
UE4Editor_AlembicImporter!UAlembicImportFactory::FactoryCreateBinary() alembicimportfactory.cpp:102 
UE4Editor_UnrealEd!UFactory::FactoryCreateBinary() factory.h:300 
UE4Editor_UnrealEd!UFactory::FactoryCreateFile() factory.cpp:72 
UE4Editor_UnrealEd!UFactory::ImportObject() factory.cpp:143 
UE4Editor_AssetTools!FAssetTools::ImportAssets() assettools.cpp:971 
UE4Editor_AssetTools!FAssetTools::ImportAssets() assettools.cpp:571 
UE4Editor_ContentBrowser!SContentBrowser::ImportAsset() scontentbrowser.cpp:781 
UE4Editor_ContentBrowser!SContentBrowser::HandleImportClicked() scontentbrowser.cpp:772 
UE4Editor_ContentBrowser!TMemberFunctionCaller<SContentBrowser,FReply() delegateinstanceinterface.h:161 
UE4Editor_ContentBrowser!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SContentBrowser,FReply() tuple.h:115 
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,FReply __cdecl() delegateinstancesimpl.h:317 
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() delegatesignatureimpl.inl:521 
UE4Editor_Slate!SButton::OnMouseButtonUp() sbutton.cpp:278 
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() slateapplication.cpp:4901 
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() slateapplication.cpp:215 
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() slateapplication.cpp:4890 
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() slateapplication.cpp:5348 
UE4Editor_Slate!FSlateApplication::OnMouseUp() slateapplication.cpp:5328 
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() windowsapplication.cpp:1584 
UE4Editor_Core!FWindowsApplication::DeferMessage() windowsapplication.cpp:1930 
UE4Editor_Core!FWindowsApplication::ProcessMessage() windowsapplication.cpp:747 
UE4Editor_Core!FWindowsApplication::AppWndProc() windowsapplication.cpp:669 
user32!<Unknown> 
user32!<Unknown> 
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() windowsplatformmisc.cpp:905 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2788 
UE4Editor!GuardedMain() launch.cpp:156 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown> 

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Fixed
ComponentGameplay
Affects Versions4.13
Target Fix4.13
Fix Commit3080817
Main Commit3092051
Release Commit3080817
CreatedAug 5, 2016
ResolvedAug 8, 2016
UpdatedApr 27, 2018