Inability to exit game or enter VAB

[Atlas Gaming]

I seem to be experiencing a very strange problem that cropped up me without making any changes (other than steam auto updates) to my game... I assumed some mod caused it, but it after trying a clean install of both the core game and redownload/install of the same mods that worked fine last week, I'm still getting the same problem. It is not tied to a particular save game, and pops up in new save as well. 

  So far the ONLY thing that I've been able to get to work is a game clean install with not a single mod. If I add mods, then remove all mods, it still has this error.

Here is the relevant error messages that trigger when I try to exit game or select one of the buildings.

[ERR 18:01:56.249] Input is null for field 'name' in config node 'SCENARIO'
  at System.Environment.get_StackTrace () [0x00000] in <ad04dee02e7e4a85a1299c7ee81c79f6>:0 
  at ConfigNode.AddValue (System.String name, System.String value) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioModule.Save (ConfigNode node) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ProtoScenarioModule..ctor (ScenarioModule module) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.UpdateModules () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.GetUpdatedProtoModules () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Game.Updated (GameScenes startSceneOverride) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode, GameScenes startScene) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at MCSceneSpawner.OnMCDespawn () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at EventVoid.Fire () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at MCDespawner.BtnExit () [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at UnityEngine.Events.InvokableCall.Invoke () [0x00000] in <5aeafee3fea24f37abd1315553f2cfa6>:0 
  at UnityEngine.Events.UnityEvent.Invoke () [0x00000] in <5aeafee3fea24f37abd1315553f2cfa6>:0 
  at UnityEngine.UI.Button.Press () [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.StandaloneInputModule.ReleaseMouse (UnityEngine.EventSystems.PointerEventData pointerEvent, UnityEngine.GameObject currentOverGo) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.StandaloneInputModule.ProcessMousePress (UnityEngine.EventSystems.PointerInputModule+MouseButtonEventData data) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.StandaloneInputModule.ProcessMouseEvent (System.Int32 id) [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.StandaloneInputModule.ProcessMouseEvent () [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.StandaloneInputModule.Process () [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 
  at UnityEngine.EventSystems.EventSystem.Update () [0x00000] in <22fd67f59718453e9250a6de1843ef8b>:0 

[ERR 18:01:56.250] Exception handling event onGUIMissionControlDespawn in class MCSceneSpawner:System.NullReferenceException: Object reference not set to an instance of an object
  at ScenarioModule.Save (ConfigNode node) [0x0009e] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ProtoScenarioModule..ctor (ScenarioModule module) [0x0003c] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.UpdateModules () [0x00055] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at ScenarioRunner.GetUpdatedProtoModules () [0x00005] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at Game.Updated (GameScenes startSceneOverride) [0x000a7] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode, GameScenes startScene) [0x00045] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode) [0x00000] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at MCSceneSpawner.OnMCDespawn () [0x0000a] in <9d71e4043e394d78a6cf9193ad011698>:0 
  at EventVoid.Fire () [0x00127] in <9d71e4043e394d78a6cf9193ad011698>:0 

[EXC 18:01:56.253] NullReferenceException: Object reference not set to an instance of an object
    ScenarioModule.Save (ConfigNode node) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    ProtoScenarioModule..ctor (ScenarioModule module) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    ScenarioRunner.UpdateModules () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    ScenarioRunner.GetUpdatedProtoModules () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    Game.Updated (GameScenes startSceneOverride) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode, GameScenes startScene) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode) (at <9d71e4043e394d78a6cf9193ad011698>:0)
    MCSceneSpawner.OnMCDespawn () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    EventVoid.Fire () (at <9d71e4043e394d78a6cf9193ad011698>:0)
    UnityEngine.DebugLogHandler:LogException(Exception, Object)
    ModuleManager.UnityLogHandle.InterceptLogHandler:LogException(Exception, Object)
    UnityEngine.Debug:LogException(Exception)
    EventVoid:Fire()
    MCDespawner:BtnExit()
    UnityEngine.EventSystems.EventSystem:Update()

Edited December 7, 2019 by Atlas Gaming

[Atlas Gaming]

This post has the exact same problem.   Lets move to that one and close this one out.