Why am i getting the error Assertion failed while importing a static mesh from maya 2014?

Development Asset Creation
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1

PLEASE HELP is this also a driver related error??
I was trying to import a mesh with multiple objects in it and is abt 1,06,555 poly faces.

Assertion failed: ChartB.Join[ Side ^ 1 ] == i [File:D:\UnrealEngine-4.5\Engine\Source\Developer\MeshUtilities\Private\LayoutUV.cpp] [Line: 374]

KERNELBASE.dll!UnknownFunction (0x00007ffc43aa606c) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() (0x00007ffc160c9ecd) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor-Core.dll!FOutputDevice::Logf__VA() (0x00007ffc15f65b08) + 159 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\misc\outputdevice.cpp:145]
UE4Editor-Core.dll!FDebug::AssertFailed() (0x00007ffc15f488c2) + 62 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\misc\outputdevice.cpp:220]
UE4Editor-MeshUtilities.dll!FLayoutUV::FindCharts() (0x00007ffc0aca6777) + 0 bytes [d:\unrealengine-4.5\engine\source\developer\meshutilities\private\layoutuv.cpp:375]
UE4Editor-MeshUtilities.dll!FMeshUtilities::BuildStaticMesh() (0x00007ffc0ac9546a) + 0 bytes [d:\unrealengine-4.5\engine\source\developer\meshutilities\private\meshutilities.cpp:2293]
UE4Editor-Engine.dll!FStaticMeshRenderData::Cache() (0x00007ffbeb778353) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\engine\private\staticmesh.cpp:1143]
UE4Editor-Engine.dll!UStaticMesh::CacheDerivedData() (0x00007ffbeb77881c) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\engine\private\staticmesh.cpp:1643]
UE4Editor-Engine.dll!UStaticMesh::Build() (0x00007ffbeb772709) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\engine\private\staticmeshbuild.cpp:88]
UE4Editor-UnrealEd.dll!UnFbx::FFbxImporter::ImportStaticMeshAsSingle() (0x00007ffc14f23900) + 11 bytes [d:\unrealengine-4.5\engine\source\editor\unrealed\private\fbx\fbxstaticmeshimport.cpp:1209]
UE4Editor-UnrealEd.dll!UFbxFactory::FactoryCreateBinary() (0x00007ffc14ebb83b) + 71 bytes [d:\unrealengine-4.5\engine\source\editor\unrealed\private\fbx\fbxfactory.cpp:292]
UE4Editor-UnrealEd.dll!UFactory::StaticImportObject() (0x00007ffc14edb0e7) + 289 bytes [d:\unrealengine-4.5\engine\source\editor\unrealed\private\factories\factory.cpp:285]
UE4Editor-AssetTools.dll!FAssetTools::ImportAssets() (0x00007ffc0584704c) + 164 bytes [d:\unrealengine-4.5\engine\source\developer\assettools\private\assettools.cpp:728]
UE4Editor-AssetTools.dll!FAssetTools::ImportAssets() (0x00007ffc05845c2f) + 27 bytes [d:\unrealengine-4.5\engine\source\developer\assettools\private\assettools.cpp:384]
UE4Editor-ContentBrowser.dll!SContentBrowser::HandleImportClicked() (0x00007ffc008e61b1) + 29 bytes [d:\unrealengine-4.5\engine\source\editor\contentbrowser\private\scontentbrowser.cpp:628]
UE4Editor-ContentBrowser.dll!TBaseSPMethodDelegateInstance_RetVal_NoParams::Execute() (0x00007ffc008a2c8f) + 17 bytes [d:\unrealengine-4.5\engine\source\runtime\core\public\delegates\delegateinstancesimpl.inl:161]
UE4Editor-Slate.dll!TBaseDelegate_RetVal_NoParams::Execute() (0x00007ffc15ae5c0a) + 6 bytes [d:\unrealengine-4.5\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:1058]
UE4Editor-Slate.dll!SButton::OnMouseButtonUp() (0x00007ffc15b02ac5) + 17 bytes [d:\unrealengine-4.5\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:188]
UE4Editor-Slate.dll!FSlateApplication::ProcessMouseButtonUpEvent() (0x00007ffc15a5e67c) + 23 bytes [d:\unrealengine-4.5\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3505]
UE4Editor-Slate.dll!FSlateApplication::OnMouseUp() (0x00007ffc15a4bd76) + 16 bytes [d:\unrealengine-4.5\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:3469]
UE4Editor-Core.dll!FWindowsApplication::ProcessDeferredMessage() (0x00007ffc16049c39) + 12 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsapplication.cpp:1346]
UE4Editor-Core.dll!FWindowsApplication::DeferMessage() (0x00007ffc160360db) + 74 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsapplication.cpp:1637]
UE4Editor-Core.dll!FWindowsApplication::ProcessMessage() (0x00007ffc1604adb9) + 41 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsapplication.cpp:737]
UE4Editor-Core.dll!FWindowsApplication::AppWndProc() (0x00007ffc16032a22) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsapplication.cpp:599]
USER32.dll!UnknownFunction (0x00007ffc43c42434) + 0 bytes [UnknownFile:0]
USER32.dll!UnknownFunction (0x00007ffc43c42297) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!FWindowsPlatformMisc::PumpMessages() (0x00007ffc1604b276) + 48 bytes [d:\unrealengine-4.5\engine\source\runtime\core\private\windows\windowsplatformmisc.cpp:757]
UE4Editor.exe!FEngineLoop::Tick() (0x00007ff62332b082) + 8 bytes [d:\unrealengine-4.5\engine\source\runtime\launch\private\launchengineloop.cpp:2111]
UE4Editor.exe!GuardedMain() (0x00007ff623320c3e) + 0 bytes [d:\unrealengine-4.5\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor.exe!GuardedMainWrapper() (0x00007ff623320caa) + 5 bytes [d:\unrealengine-4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor.exe!WinMain() (0x00007ff62332c859) + 17 bytes [d:\unrealengine-4.5\engine\source\runtime\launch\private\windows\launchwindows.cpp:201]
UE4Editor.exe!__tmainCRTStartup() (0x00007ff62332d789) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
KERNEL32.DLL!UnknownFunction (0x00007ffc43ff16ad) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffc463d4409) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffc463d4409) + 0 bytes [UnknownFile:0]

2

UPDATED to 4.6.1 new error is…

MachineId:495D6DF142EAC25834716299FDEC2F3A
EpicAccountId:0c010e0b92b247b58db47e4b02035959

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: ChartB.Join[ Side ^ 1 ] == i [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Developer\MeshUtilities\Private\LayoutUV.cpp] [Line: 374]

KERNELBASE + 24684 bytes
UE4Editor_Core + 3092349 bytes
UE4Editor_Core + 1597688 bytes
UE4Editor_Core + 1479058 bytes
UE4Editor_MeshUtilities + 222402 bytes
UE4Editor_MeshUtilities + 149371 bytes
UE4Editor_Engine + 8442069 bytes
UE4Editor_Engine + 8443260 bytes
UE4Editor_Engine + 8423259 bytes
UE4Editor_UnrealEd + 9575680 bytes
UE4Editor_UnrealEd + 9136826 bytes
UE4Editor_UnrealEd + 9270727 bytes
UE4Editor_AssetTools + 847862 bytes
UE4Editor_AssetTools + 841823 bytes
UE4Editor_ContentBrowser + 1614625 bytes
UE4Editor_ContentBrowser + 87303 bytes
UE4Editor_ContentBrowser + 121209 bytes
UE4Editor_ContentBrowser + 1344569 bytes
UE4Editor_Slate + 2116506 bytes
UE4Editor_Slate + 2296435 bytes
UE4Editor_Slate + 432060 bytes
UE4Editor_Slate + 160583 bytes
UE4Editor_Slate + 832224 bytes
UE4Editor_Slate + 770598 bytes
UE4Editor_Core + 2484713 bytes
UE4Editor_Core + 2400763 bytes
UE4Editor_Core + 2489275 bytes
UE4Editor_Core + 2387186 bytes
user32 + 9268 bytes
user32 + 8855 bytes
UE4Editor_Core + 2490486 bytes
UE4Editor!FEngineLoop::Tick() + 3434 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2193]
UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launch.cpp:131]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]

3

Hi Tarun,

Thank you for reporting your crash and apologies for the wait.

There are some known issues that affect FBXs when imported. Can you try importing your mesh and unchecking the default import option for “Generate Lightmap UV.”

There is a known issue (UE-3032) that causes the editor to crash with FBXs when generating the Lightmap UV.

Try turning that off and let me know if that resolves your issue.

Thank you!

Tim