This is a regression in behavior between 4.14.1 and 4.14.2!
The editor will crash when importing FBX meshes that have multiple material ID assignments. If it's a single material ID it will import without the crash.
Tested with:
Working: 4.14.1 Binary CL-3224400
Broken: 4.14.2 Binary CL-3241561
Working: 4.15 Dev-Main CL-3238204
Working: 4.16 Dev-Main CL-3247095
Working: 4.15 Automated Binary Build CL-3247232
Added test assets from 3Ds Max 2016 that recreate the crash attached below.
1. Import attached asset
2. Use default settings for the Import Options
Results: The editor will crash
Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 634]
Array index out of bounds: -1 from an array of size
MachineId:7D8A1A304BE9658328C158A3D14CC774
EpicAccountId:7c6293d6bf1940c0bc89e1494c5ba9d7
Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 634]
Array index out of bounds: -1 from an array of size 1
UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:332] UE4Editor_UnrealEd!UnFbx::FFbxImporter::ReorderMaterialToFbxOrder() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\fbx\fbxstaticmeshimport.cpp:1619] UE4Editor_UnrealEd!UFbxFactory::FactoryCreateBinary() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\fbx\fbxfactory.cpp:297] UE4Editor_UnrealEd!UFactory::FactoryCreateFile() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\factories\factory.cpp:75] UE4Editor_UnrealEd!UFactory::ImportObject() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\unrealed\private\factories\factory.cpp:150] UE4Editor_AssetTools!FAssetTools::ImportAssetsInternal() [d:\build\++ue4+release-4.14+compile\sync\engine\source\developer\assettools\private\assettools.cpp:1375] UE4Editor_AssetTools!FAssetTools::ImportAssets() [d:\build\++ue4+release-4.14+compile\sync\engine\source\developer\assettools\private\assettools.cpp:628] UE4Editor_AssetTools!FAssetTools::ImportAssets() [d:\build\++ue4+release-4.14+compile\sync\engine\source\developer\assettools\private\assettools.cpp:561] UE4Editor_ContentBrowser!SContentBrowser::ImportAsset() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:790] UE4Editor_ContentBrowser!SContentBrowser::HandleImportClicked() [d:\build\++ue4+release-4.14+compile\sync\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:781] UE4Editor_ContentBrowser!TMemberFunctionCaller<SContentBrowser,FReply (__cdecl SContentBrowser::*)(void) __ptr64>::operator()<>() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\delegateinstanceinterface.h:161] UE4Editor_ContentBrowser!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SContentBrowser,FReply (__cdecl SContentBrowser::*)(void) __ptr64> >() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\tuple.h:116] UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,SContentBrowser,0,FReply __cdecl(void)>::Execute() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:318] UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:522] UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:275] UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator()() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5010] UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:215] UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4999] UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5462] UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5439] UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:1652] UE4Editor_Core!FWindowsApplication::DeferMessage() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:2071] UE4Editor_Core!FWindowsApplication::ProcessMessage() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:814] UE4Editor_Core!FWindowsApplication::AppWndProc() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:678] user32 user32 UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:951] UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2811] UE4Editor!GuardedMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launch.cpp:152] UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126] UE4Editor!WinMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:202] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264] kernel32 ntdll
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| 11 |
| Component | UE - Editor - Content Pipeline - Import and Export |
|---|---|
| Affects Versions | 4.14.2 |
| Target Fix | 4.14.3 |
| Fix Commit | 3247844 |
|---|
| Created | Jan 5, 2017 |
|---|---|
| Resolved | Jan 5, 2017 |
| Updated | Apr 27, 2018 |