HLOD editor crash 4.20

Hello! I’ve been trying to use HLOD several times, but it’s always crashes the engine. I have a simple scene: landscape + simple static mesh trees (less than 1k tris, 256 textures per sm, 50 actors), landscape Textures from .sbs - substance files, actor with hism components ( with disabled “include HLOD” generation on actor and components), several particle blueprints ( HLOD disabled) - overall i’ve disabled include HOLD for all actors\blueprints, except for world settings and this trees static meshes - HLOD clusters are being generated only for this sm trees. What the problem could be in this case?

Crash log
Access violation - code c0000005 (first/second chance not available)

UE4Editor_Engine!UHLODProxy::GenerateKeyForActor() [d:\build\++ue4\sync\engine\source\runtime\engine\private\hlodproxy.cpp:332]
UE4Editor_HierarchicalLODUtilities!FHierarchicalLODUtilities::BuildStaticMeshForLODActor() [d:\build\++ue4\sync\engine\source\developer\hierarchicallodutilities\private\hierarchicallodutilities.cpp:354]
UE4Editor_HierarchicalLODUtilities!FHierarchicalLODUtilities::BuildStaticMeshForLODActor() [d:\build\++ue4\sync\engine\source\developer\hierarchicallodutilities\private\hierarchicallodutilities.cpp:213]
UE4Editor_UnrealEd!FHierarchicalLODBuilder::BuildMeshesForLODActors() [d:\build\++ue4\sync\engine\source\editor\unrealed\private\hierarchicallod.cpp:675]
UE4Editor_HierarchicalLODOutliner!<lambda_54dc5f3e535b305158d197f37ea80386>::operator()() [d:\build\++ue4\sync\engine\source\editor\hierarchicallodoutliner\private\hlodoutliner.cpp:797]
UE4Editor_HierarchicalLODOutliner!HLODOutliner::SHLODOutliner::HandleBuildLODActors() [d:\build\++ue4\sync\engine\source\editor\hierarchicallodoutliner\private\hlodoutliner.cpp:818]
UE4Editor_HierarchicalLODOutliner!TBaseSPMethodDelegateInstance<0,HLODOutliner::SHLODOutliner,0,FReply __cdecl(void)>::Execute() [d:\build\++ue4\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:269]
UE4Editor_Slate!SButton::OnMouseButtonUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\widgets\input\sbutton.cpp:290]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_1002768c627006711ef2f351a87ec0e7> >() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:268]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5472]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5979]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [d:\build\++ue4\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:5959]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:1736]
UE4Editor_ApplicationCore!FWindowsApplication::DeferMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:2182]
UE4Editor_ApplicationCore!FWindowsApplication::ProcessMessage() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:895]
UE4Editor_ApplicationCore!FWindowsApplication::AppWndProc() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsapplication.cpp:732]
user32
user32
UE4Editor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [d:\build\++ue4\sync\engine\source\runtime\applicationcore\private\windows\windowsplatformapplicationmisc.cpp:129]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3417]
UE4Editor!GuardedMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:144]
UE4Editor!WinMain() [d:\build\++ue4\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:223]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283]
kernel32
ntdll

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Thanks