Can't leave or return to the VAB

[Voodoo8648]

Sometimes (lately 100% of the time) I all of the sudden can't recover vessel or return to the VAB or even exit to the Main Menu. I can still click on parts and interact with the in game UI but can't goto the tracking station or VAB. I have to either Load save, or force close KSP... but lately restarting the game doesn't work either. I load into the save from the main menu, but can't go into the VAB or Tracking station and again, can't exit to the main menu. 

Here is my log. There is a null reference exception at 19:30:04.699. https://1drv.ms/u/s!AvUWxjgM4SuQiNUxr6fgLVGfhxZ3ww?e=dcreZd

Here's the exception:

Spoiler

[EXC 19:30:04.699] NullReferenceException: Object reference not set to an instance of an object
    KerbalHealth.CLS.GetCLSSpace (ProtoCrewMember pcm, Vessel vessel) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.Core.GetCrew (ProtoCrewMember pcm, System.Boolean entireVessel) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.Logic.Test (ProtoCrewMember pcm) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.Logic.Test (ProtoCrewMember pcm) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.MTBEModifier.Calculate (System.Double baseValue, ProtoCrewMember pcm) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.MTBEModifier.Calculate (System.Collections.Generic.List`1[T] modifiers, System.Double baseValue, ProtoCrewMember pcm) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.HealthCondition.GetMTBE (ProtoCrewMember pcm) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.KerbalHealthScenario+<>c__DisplayClass64_2.<UpdateKerbals>b__1 (KerbalHealth.HealthCondition hc) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    System.Linq.Enumerable+WhereEnumerableIterator`1[TSource].MoveNext () (at <351e49e2a5bf4fd6beabb458ce2255f3>:0)
    KerbalHealth.KerbalHealthScenario.UpdateKerbals (System.Boolean forced) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    KerbalHealth.KerbalHealthScenario.OnSave (ConfigNode node) (at <01bb8e04623f43048f84145489c3e8ec>:0)
    ScenarioModule.Save (ConfigNode node) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    ProtoScenarioModule..ctor (ScenarioModule module) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    ScenarioRunner.UpdateModules () (at <4b449f2841f84227adfaad3149c8fdba>:0)
    ScenarioRunner.GetUpdatedProtoModules () (at <4b449f2841f84227adfaad3149c8fdba>:0)
    Game.Updated (GameScenes startSceneOverride) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode, GameScenes startScene) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    GamePersistence.SaveGame (System.String saveFileName, System.String saveFolder, SaveMode saveMode) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    VehicleAssemblyBuilding.OnClicked () (at <4b449f2841f84227adfaad3149c8fdba>:0)
    SpaceCenterBuilding.EnterBuilding () (at <4b449f2841f84227adfaad3149c8fdba>:0)
    SpaceCenterBuilding.OnLeftClick () (at <4b449f2841f84227adfaad3149c8fdba>:0)
    KSP.UI.Screens.SpaceCenter.BuildingPickerItem.OnPointerClick (UnityEngine.EventSystems.PointerEventData data) (at <4b449f2841f84227adfaad3149c8fdba>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at <0c883c16262a4198973f823d01e07427>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at <0c883c16262a4198973f823d01e07427>:0)
    UnityEngine.DebugLogHandler:LogException(Exception, Object)
    ModuleManager.UnityLogHandle.InterceptLogHandler:LogException(Exception, Object)
    UnityEngine.EventSystems.EventSystem:Update()

 

[jimmymcgoochie]

That exception suggests to me that Kerbal Health and/or Connected Living Space are to blame, try reinstalling the latest versions of both and see if that helps? If not, uninstall both; if it works then, try each one individually and then together to see what’s to blame.