Error After update 2018.3.7f1

[livio3d]

After the last security update by unity flowcanvas give me that 2 errors when i try to add a variable
the error is present always on clean and new project and after unity reinstall too

InvalidOperationException: Internal Deserialization Error – Object definition has not been encountered for object with id=84; have you reordered or modified the serialized data? If this is an issue with an unmodified Full Json implementation and unmodified serialization data, please report an issue with an included test case.
ParadoxNotion.Serialization.FullSerializer.Internal.fsCyclicReferenceManager.GetReferenceObject (System.Int32 id) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/Full Serializer/Internal/fsCyclicReferenceManager.cs:61)
ParadoxNotion.Serialization.FullSerializer.fsSerializer.Internal_Deserialize (System.Type overrideConverterType, ParadoxNotion.Serialization.FullSerializer.fsData data, System.Type storageType, System.Object& result, System.Collections.Generic.List

1[ParadoxNotion.Serialization.FullSerializer.fsObjectProcessor]& processors) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/Full Serializer/fsSerializer.cs:457)
ParadoxNotion.Serialization.FullSerializer.fsSerializer.TryDeserialize (ParadoxNotion.Serialization.FullSerializer.fsData data, System.Type storageType, System.Type overrideConverterType, System.Object& result) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/Full Serializer/fsSerializer.cs:438)
UnityEngine.Logger:LogException(Exception)
ParadoxNotion.Services.Logger:ForwardToUnity(LogType, Object, String, Object) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Services/Logger.cs:125)
ParadoxNotion.Services.Logger:Internal_Log(LogType, Object, String, Object) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Services/Logger.cs:118)
ParadoxNotion.Services.Logger:LogException(Exception, String, Object) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Services/Logger.cs:78)
ParadoxNotion.Serialization.FullSerializer.fsSerializer:TryDeserialize(fsData, Type, Type, Object&) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/Full Serializer/fsSerializer.cs:446)
ParadoxNotion.Serialization.JSONSerializer:Internal_Deserialize(Type, String, List1, Object) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/JSONSerializer.cs:112)
ParadoxNotion.Serialization.JSONSerializer:Deserialize(String, List1) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/JSONSerializer.cs:74)
ParadoxNotion.Design.GenericMenuBrowser:LoadPrefs() (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:202)
ParadoxNotion.Design.GenericMenuBrowser:OnOpen() (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:190)
UnityEditor.PopupWindow:Show(Rect, PopupWindowContent)
ParadoxNotion.Design.GenericMenuBrowser:Show(GenericMenu, Vector2, String, Type) (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:151)
ParadoxNotion.Design.EditorUtils:ShowAsBrowser(GenericMenu, String, Type) (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/EditorUtils/EditorUtils.ContextMenus.cs:432)
NodeCanvas.Editor.BlackboardEditor:ShowVariables(IBlackboard, Object) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/PartialEditor/Editors/BlackboardEditor.cs:40)
NodeCanvas.Editor.GraphEditor:ShowBlackboardGUIPanel(Graph, Vector2) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.Panels.cs:143)
NodeCanvas.Editor.GraphEditor:ShowPanels(Graph, Vector2) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.Panels.cs:27)
NodeCanvas.Editor.GraphEditor:OnGUI() (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.cs:543)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

and

Exception: Internal Deserialization Error – Object definition has not been encountered for object with id=84; have you reordered or modified the serialized data? If this is an issue with an unmodified Full Json implementation and unmodified serialization data, please report an issue with an included test case.
ParadoxNotion.Serialization.FullSerializer.fsResult.AssertSuccess () (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/Full Serializer/fsResult.cs:89)
ParadoxNotion.Serialization.JSONSerializer.Internal_Deserialize (System.Type type, System.String json, System.Collections.Generic.List1[T] objectReferences, System.Object instance) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/JSONSerializer.cs:112)
ParadoxNotion.Serialization.JSONSerializer.Deserialize[T] (System.String json, System.Collections.Generic.List`1[T] objectReferences) (at Assets/ParadoxNotion/CanvasCore/Common/Runtime/Serialization/JSONSerializer.cs:74)
ParadoxNotion.Design.GenericMenuBrowser.LoadPrefs () (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:202)
ParadoxNotion.Design.GenericMenuBrowser.OnOpen () (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:190)
UnityEditor.PopupWindow.Init (UnityEngine.Rect activatorRect, UnityEditor.PopupWindowContent windowContent, UnityEditor.PopupLocation[] locationPriorityOrder, UnityEditor.ShowMode showMode, System.Boolean giveFocus) (at C:/buildslave/unity/build/Editor/Mono/GUI/PopupWindow.cs:79)
UnityEditor.PopupWindow.Show (UnityEngine.Rect activatorRect, UnityEditor.PopupWindowContent windowContent, UnityEditor.PopupLocation[] locationPriorityOrder, UnityEditor.ShowMode showMode) (at C:/buildslave/unity/build/Editor/Mono/GUI/PopupWindow.cs:55)
UnityEditor.PopupWindow.Show (UnityEngine.Rect activatorRect, UnityEditor.PopupWindowContent windowContent, UnityEditor.PopupLocation[] locationPriorityOrder) (at C:/buildslave/unity/build/Editor/Mono/GUI/PopupWindow.cs:44)
UnityEditor.PopupWindow.Show (UnityEngine.Rect activatorRect, UnityEditor.PopupWindowContent windowContent) (at C:/buildslave/unity/build/Editor/Mono/GUI/PopupWindow.cs:39)
ParadoxNotion.Design.GenericMenuBrowser.Show (UnityEditor.GenericMenu newMenu, UnityEngine.Vector2 pos, System.String title, System.Type keyType) (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/GenericMenuBrowser.cs:151)
ParadoxNotion.Design.EditorUtils.ShowAsBrowser (UnityEditor.GenericMenu menu, System.String title, System.Type keyType) (at Assets/ParadoxNotion/CanvasCore/Common/Design/PartialEditor/EditorUtils/EditorUtils.ContextMenus.cs:432)
NodeCanvas.Editor.BlackboardEditor.ShowVariables (NodeCanvas.Framework.IBlackboard bb, UnityEngine.Object contextParent) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/PartialEditor/Editors/BlackboardEditor.cs:40)
NodeCanvas.Editor.GraphEditor.ShowBlackboardGUIPanel (NodeCanvas.Framework.Graph graph, UnityEngine.Vector2 canvasMousePos) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.Panels.cs:143)
NodeCanvas.Editor.GraphEditor.ShowPanels (NodeCanvas.Framework.Graph graph, UnityEngine.Vector2 canvasMousePos) (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.Panels.cs:27)
NodeCanvas.Editor.GraphEditor.OnGUI () (at Assets/ParadoxNotion/CanvasCore/Framework/Design/Editor/Windows/GraphEditor.cs:543)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <d7ac571ca2d04b2f981d0d886fa067cf>:0)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:342)
UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:336)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition, UnityEngine.Rect viewRect) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:310)
UnityEditor.DockArea.DrawView (UnityEngine.Rect viewRect, UnityEngine.Rect dockAreaRect, System.Boolean customBorder, System.Boolean floatingWindow, System.Boolean isBottomTab) (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:361)
UnityEditor.DockArea.OldOnGUI () (at C:/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:320)
UnityEngine.Experimental.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:266)
UnityEngine.Experimental.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:438)
UnityEngine.Experimental.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:421)
UnityEngine.Experimental.UIElements.IMGUIContainer.HandleEvent (UnityEngine.Experimental.UIElements.EventBase evt) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:401)
UnityEngine.Experimental.UIElements.EventDispatcher.ProcessEvent (UnityEngine.Experimental.UIElements.EventBase evt, UnityEngine.Experimental.UIElements.IPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/EventDispatcher.cs:511)
UnityEngine.Experimental.UIElements.EventDispatcher.Dispatch (UnityEngine.Experimental.UIElements.EventBase evt, UnityEngine.Experimental.UIElements.IPanel panel, UnityEngine.Experimental.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/Modules/UIElements/EventDispatcher.cs:307)
UnityEngine.Experimental.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.Experimental.UIElements.EventBase e, UnityEngine.Experimental.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/Modules/UIElements/Panel.cs:176)
UnityEngine.Experimental.UIElements.UIElementsUtility.DoDispatch (UnityEngine.Experimental.UIElements.BaseVisualElementPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:245)
UnityEngine.Experimental.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:68)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

[Gavalakis]

Hello and sorry for the late reply due to website migration.

What exact version of Unity (+ patch) are you using?

I have just tried in Unity 2018.3.8f1 (which presumably also includes the security patch) and I had no problems.

Please let me know.

Thank you.

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[Author]

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