OBJ file causes a `Debug Assertion Failed!` error

When importing this users file of an OBJ asset there will be an assertion failed error.

On the import message if you hit "ignore" until the mesh imports all will work in 4.10 or later. This was not required in 4.9.

Also if you hit abort or retry the editor will crash.

1. Open UE4
2. Import attached asset
3. Error Message appears

Results: If choosing abort or retry the editor will crash. If continually clicking ignore the asset will eventually import in.

Expected: OBJ will import without message.

Regression: Yes

MachineId:621DFBAB44A9B51A4245D5A61065407D
EpicAccountId:7c6293d6bf1940c0bc89e1494c5ba9d7

Break instruction exception - code 80000003 (first/second chance not available)

libfbxsdk
libfbxsdk
libfbxsdk
libfbxsdk
libfbxsdk
libfbxsdk
libfbxsdk
libfbxsdk
UE4Editor_UnrealEd!UnFbx::FFbxImporter::ImportFile() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\fbx\fbxmainimport.cpp:834]
UE4Editor_UnrealEd!UnFbx::FFbxImporter::GetSceneInfo() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\fbx\fbxmainimport.cpp:463]
UE4Editor_UnrealEd!UnFbx::FFbxImporter::GetImportType() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\fbx\fbxmainimport.cpp:407]
UE4Editor_UnrealEd!UFbxFactory::DetectImportType() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\fbx\fbxfactory.cpp:100]
UE4Editor_UnrealEd!UFbxFactory::FactoryCreateBinary() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\fbx\fbxfactory.cpp:182]
UE4Editor_UnrealEd!UFactory::StaticImportObject() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\unrealed\private\factories\factory.cpp:318]
UE4Editor_AssetTools!FAssetTools::ImportAssets() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\developer\assettools\private\assettools.cpp:919]
UE4Editor_AssetTools!FAssetTools::ImportAssets() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\developer\assettools\private\assettools.cpp:538]
UE4Editor_ContentBrowser!SContentBrowser::ImportAsset() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:744]
UE4Editor_ContentBrowser!SContentBrowser::HandleImportClicked() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:735]
UE4Editor_ContentBrowser!TMemberFunctionCaller<SContentBrowser,FReply (__cdecl SContentBrowser::*)(void) __ptr64>::operator()<>() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstanceinterface_variadics.h:161]
UE4Editor_ContentBrowser!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter_ExplicitReturnType<FReply,TMemberFunctionCaller<SContentBrowser,FReply (__cdecl SContentBrowser::*)(void) __ptr64> >() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\tuple.h:128]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,FReply __cdecl(void)>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:321]
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:521]
UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:273]
UE4Editor_Slate!<lambda_e85cd558f9d1ac60b985d8633a9ca6be>::operator()() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4493]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_e85cd558f9d1ac60b985d8633a9ca6be> >() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:214]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4483]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4900]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4876]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:1430]
UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:1735]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:719]
UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsapplication.cpp:641]
user32
user32
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:884]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launchengineloop.cpp:2594]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++ue4+release-4.11\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll

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