Engine Crashes When Trying To Reimport Skeletal Mesh For One That Has No Clothing Data

The engine crashes when trying to reimport a skeletal mesh that has no clothing data.

This seems related to https://jira.it.epicgames.net/browse/UE-86948.

Found in 4.24.1 CL#10757647
Reproduced in 4.25 Main CL#109285306

1. Import a skeletal mesh that has a section that can be used for cloth simulation.
2. Make sure that it has clothing data applied.
3. Delete the the clothing data that is currently applied.
4. Try to Reimport the skeletal mesh.

Result: The engine crashes.

Expected: The skeletal mesh reimports without any issues.

LoginId:9a8d08644d702ac44f074090ac311686
EpicAccountId:580fb2844ad145d79dff08f42acea7c6

Assertion failed: Binding.Asset [Link Removed] [Line: 2536]

UE4Editor_Core!AssertFailedImplV() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:105]
UE4Editor_Core!FDebug::CheckVerifyFailedImpl() [d:\build\++ue4\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:455]
UE4Editor_SkeletalMeshUtilitiesCommon!FLODUtilities::UnbindClothingAndBackup() [d:\build\++ue4\sync\engine\source\developer\skeletalmeshutilitiescommon\private\lodutilities.cpp:2536]
UE4Editor_SkeletalMeshUtilitiesCommon!FLODUtilities::UnbindClothingAndBackup() [d:\build\++ue4\sync\engine\source\developer\skeletalmeshutilitiescommon\private\lodutilities.cpp:2518]
UE4Editor_UnrealEd!UnFbx::FFbxImporter::ReimportSkeletalMesh() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\fbx\fbxskeletalmeshimport.cpp:2516]
UE4Editor_UnrealEd!UReimportFbxSkeletalMeshFactory::Reimport() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\factories\editorfactories.cpp:6316]
UE4Editor_UnrealEd!FReimportManager::Reimport() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editor.cpp:373]
UE4Editor_UnrealEd!FReimportManager::ReimportMultiple() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editor.cpp:615]
UE4Editor_UnrealEd!FReimportManager::ValidateAllSourceFileAndReimport() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\editor.cpp:576]
UE4Editor_ContentBrowser!FAssetContextMenu::ExecuteReimportWithNewFile() [d:\build\++ue4\sync\engine\source\editor\contentbrowser\private\assetcontextmenu.cpp:1890]
UE4Editor_ContentBrowser!TBaseSPMethodDelegateInstance<0,FAssetContextMenu,0,void __cdecl(void),int>::ExecuteIfSafe() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:369]
UE4Editor_Slate!SMenuEntryBlock::OnClicked() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\multibox\smenuentryblock.cpp:1068]
UE4Editor_Slate!SMenuEntryBlock::OnMenuItemButtonClicked() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\multibox\smenuentryblock.cpp:1019]
UE4Editor_Slate!TBaseSPMethodDelegateInstance<0,SMenuEntryBlock,0,FReply __cdecl(void)>::Execute() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:293]
UE4Editor_Slate!SButton::ExecuteOnClick() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:385]
UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:304]
UE4Editor_Slate!SMenuEntryButton::OnMouseButtonUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\multibox\smenuentryblock.cpp:386]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_6c1f6b862bcfb82ea6dcab28fbcc9463> >() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:372]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:4617]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5140]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5108]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1958]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2410]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1638]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:789]
user32
user32
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:130]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:4397]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:173]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:263]
UE4Editor!__scrt_common_main_seh() [d:\agent\_work\2\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll