Crash when attempting to convert a sequencer actor into a BP Class

  738       		return *this;
  739       	}
  740       
  741       	/**
  742       	 * Converts a shared pointer to a shared reference.  The pointer *must* be valid or an assertion will trigger.
  743       	 *
  744       	 * @return  Reference to the object
  745       	 */
  746       	// NOTE: The following is an Unreal extension to standard shared_ptr behavior
  747       	FORCEINLINE TSharedRef< ObjectType, Mode > ToSharedRef() const
  748       	{
  749        		// If this assert goes off, it means a shared reference was created from a shared pointer that was nullptr.
  750        		// Shared references are never allowed to be null.  Consider using TSharedPtr instead.
  751       		check( IsValid() );
  752 ***** 		return TSharedRef< ObjectType, Mode >( *this );
  753       	}
  754       
  755       	/**
  756       	 * Returns the object referenced by this pointer, or nullptr if no object is reference
  757       	 *
  758       	 * @return  The object owned by this shared pointer, or nullptr
  759       	 */
  760       	FORCEINLINE ObjectType* Get() const
  761       	{
  762       		return Object;
  763       	}
  764       
  765       	/**
  766       	 * Checks to see if this shared pointer is actually pointing to an object
  767       	 *

UE4Editor_DetailCustomizations!TSharedPtr<IPropertyHandle,0>::ToSharedRef() [sharedpointer.h:753]
UE4Editor_DetailCustomizations!FLevelSequenceBurnInOptionsCustomization::CustomizeChildren() [levelsequenceburninoptionscustomization.cpp:43]
UE4Editor_PropertyEditor!FDetailPropertyRow::OnItemNodeInitialized() [detailpropertyrow.cpp:229]
UE4Editor_PropertyEditor!FDetailItemNode::InitPropertyEditor() [detailitemnode.cpp:98]
UE4Editor_PropertyEditor!FDetailItemNode::Initialize() [detailitemnode.cpp:46]
UE4Editor_PropertyEditor!FDetailCategoryImpl::GenerateNodesFromCustomizations() [detailcategorybuilderimpl.cpp:627]
UE4Editor_PropertyEditor!FDetailCategoryImpl::GenerateChildrenForSingleLayout() [detailcategorybuilderimpl.cpp:649]
UE4Editor_PropertyEditor!FDetailCategoryImpl::GenerateChildrenForLayouts() [detailcategorybuilderimpl.cpp:713]
UE4Editor_PropertyEditor!FDetailCategoryImpl::GenerateLayout() [detailcategorybuilderimpl.cpp:833]
UE4Editor_PropertyEditor!FDetailLayoutBuilderImpl::BuildCategories() [detaillayoutbuilderimpl.cpp:154]
UE4Editor_PropertyEditor!FDetailLayoutBuilderImpl::GenerateDetailLayout() [detaillayoutbuilderimpl.cpp:189]
UE4Editor_PropertyEditor!SDetailsViewBase::UpdateSinglePropertyMap() [sdetailsviewbase.cpp:382]
UE4Editor_PropertyEditor!SDetailsViewBase::UpdatePropertyMaps() [sdetailsviewbase.cpp:347]
UE4Editor_PropertyEditor!SDetailsView::PostSetObject() [sdetailsview.cpp:779]
UE4Editor_PropertyEditor!SDetailsView::SetObjectArrayPrivate() [sdetailsview.cpp:569]
UE4Editor_PropertyEditor!SDetailsView::SetObjects() [sdetailsview.cpp:318]
UE4Editor_LevelEditor!SActorDetails::SetObjects() [sactordetails.cpp:205]
UE4Editor_LevelEditor!SLevelEditor::OnActorSelectionChanged() [sleveleditor.cpp:1463]
UE4Editor_LevelEditor!TBaseSPMethodDelegateInstance<0,SLevelEditor,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:318]
UE4Editor_LevelEditor!TBaseSPMethodDelegateInstance<0,SLevelEditor,0,void __cdecl() [delegateinstancesimpl.h:425]
UE4Editor_LevelEditor!TBaseMulticastDelegate<void,TArray<UObject * __ptr64,FDefaultAllocator> const & __ptr64,bool>::Broadcast() [delegatesignatureimpl.inl:922]
UE4Editor_UnrealEd!UUnrealEdEngine::UpdateFloatingPropertyWindowsFromActorList() [editorhook.cpp:68]
UE4Editor_UnrealEd!UUnrealEdEngine::UpdateFloatingPropertyWindows() [editorhook.cpp:59]
UE4Editor_UnrealEd!UUnrealEdEngine::NoteSelectionChange() [editorselectutils.cpp:403]
UE4Editor_UnrealEd!UUnrealEdEngine::SelectActor() [editorselectutils.cpp:633]
UE4Editor_UnrealEd!FKismetEditorUtilities::CreateBlueprintInstanceFromSelection() [kismet2.cpp:1658]
UE4Editor_UnrealEd!FKismetEditorUtilities::CreateBlueprintFromActor() [kismet2.cpp:1472]
UE4Editor_UnrealEd!FKismetEditorUtilities::CreateBlueprintFromActor() [kismet2.cpp:1220]
UE4Editor_KismetWidgets!FCreateBlueprintFromActorDialog::OnCreateBlueprint() [createblueprintfromactordialog.cpp:80]
UE4Editor_KismetWidgets!TBaseStaticDelegateInstance<void __cdecl() [delegateinstancesimpl.h:1018]
UE4Editor_UnrealEd!SCreateAssetFromObject::OnCreateAssetFromActorClicked() [screateassetfromobject.cpp:129]
UE4Editor_UnrealEd!TMemberFunctionCaller<SCreateAssetFromObject,FReply() [delegateinstanceinterface.h:161]
UE4Editor_UnrealEd!TTupleImpl<TIntegerSequence<unsigned int> >::ApplyAfter<TMemberFunctionCaller<SCreateAssetFromObject,FReply() [tuple.h:116]
UE4Editor_UnrealEd!TBaseSPMethodDelegateInstance<0,SCreateAssetFromObject,0,FReply __cdecl() [delegateinstancesimpl.h:318]
UE4Editor_Slate!TBaseDelegate<FReply>::Execute() [delegatesignatureimpl.inl:522]
UE4Editor_Slate!SButton::OnMouseButtonUp() [sbutton.cpp:275]
UE4Editor_Slate!<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1>::operator() [slateapplication.cpp:5010]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_8d0e9a1da76abd0a756a3a9d775f5ed1> >() [slateapplication.cpp:215]
UE4Editor_Slate!FSlateApplication::RoutePointerUpEvent() [slateapplication.cpp:4999]
UE4Editor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [slateapplication.cpp:5462]
UE4Editor_Slate!FSlateApplication::OnMouseUp() [slateapplication.cpp:5439]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1652]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2071]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:814]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:678]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:951]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:2811]
UE4Editor!GuardedMain() [launch.cpp:152]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:126]
UE4Editor!WinMain() [launchwindows.cpp:202]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:264]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()