Can not save the game

[Ardwest]

I cannot save my game anymore. When i landed on the mun i wanted to save my game but it just wont save, i have 10 quicksaves or smthing like that, but when i try to make another quicksave or try to overwrite one of them it just wont do anything and when i want to restart the game I will automatically go back to the last save when I had not landed on the mun yet so i will lose all my work I will do now. 

[onefrenchguy]

Encountered the same issue, both quicksaving & manual saving don't create save files, did not encounter the bug until today

[Shiny55]

Same here, my last saved file on disk is on the 28th, I've played and saved (both auto save and manual save) every day since then, but there is nothing saved.

[Alrecenk]

Just hit this today. I thought I made a save orbiting Duna, but when I reloaded the game none of my saves from today are there. When I try to save now, it just doesn't. I still have my ship saves, which I made today, but my game progress won't save anymore. Very demoralizing. I spent hours lining up that Duna intercept, and now I don't get to land it.

[Tortoise]

I have this same issue.
For developers, if it helps, this is what happens in the log file when I open up my  game for the first time and immediately try to save it:
 

Quote

[WRN 14:44:12.924] [Debug] Launch location Invalid not registered!
[EXC 14:44:13.027] NullReferenceException: Object reference not set to an instance of an object
    KSP.Sim.impl.VesselComponent.GetState () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Serialization.SerializationUtility.VesselToSerializable (KSP.Sim.impl.SimulationObjectModel vessel, System.Boolean isAutosave) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Load.CollectFlightDataFlowAction.CollectVesselComponents (System.Byte playerID) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Load.CollectFlightDataFlowAction.DoAction (System.Action resolve, System.Action`1[T] reject) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Flow.FlowAction.Do (System.Action`1[T] resolve, System.Action`2[T1,T2] reject) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Flow.SequentialFlow.NextFlowAction () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.Flow.SequentialFlow.StartFlow () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadManager.PrivateSaveCommon (KSP.Game.LoadOrSaveCampaignTicket loadOrSaveCampaignTicket, KSP.Game.Flow.SequentialFlow savingFlow) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadManager.PrivateSaveGameToFile (KSP.Game.LoadOrSaveCampaignTicket loadOrSaveCampaignTicket) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadManager.StartLoadOrSaveOperation (KSP.Game.LoadOrSaveCampaignTicket loadOrSaveCampaignTicket) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.LoadOrSaveCampaignTicket.StartLoadOrSaveOperation () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadManager.SaveGameToFile (System.String filepath, KSP.Sim.SavedGameType savedGameType, System.Boolean saveOverwriteFileIfExists, KSP.Game.OnLoadOrSaveCampaignFinishedCallback onLoadOrSaveCampaignFinishedCallback) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadDialog.SaveFile () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Game.SaveLoadDialog.OnNewSaveFile () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <695d1cc93cca45069c528c15c9fdd749>: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 <695d1cc93cca45069c528c15c9fdd749>:0)
    System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <695d1cc93cca45069c528c15c9fdd749>:0)
    System.Delegate.DynamicInvokeImpl (System.Object[] args) (at <695d1cc93cca45069c528c15c9fdd749>:0)
    System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) (at <695d1cc93cca45069c528c15c9fdd749>:0)
    System.Delegate.DynamicInvoke (System.Object[] args) (at <695d1cc93cca45069c528c15c9fdd749>:0)
    KSP.Api.CoreTypes.DelegateAction.InternalInvoke (System.Boolean catchExceptions, System.Boolean fillArgsWithoutDefault, System.Object[] args) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    KSP.Api.CoreTypes.DelegateAction.Invoke (System.Object[] args) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    UIAction_Void_Button.OnButtonLeftDown () (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    UnityEngine.Events.InvokableCall.Invoke () (at <25a85da7c6f04932b86e339dfd12957d>:0)
    UnityEngine.Events.UnityEvent.Invoke () (at <25a85da7c6f04932b86e339dfd12957d>:0)
    UnityEngine.UI.ButtonExtended.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at <8c5bdf369a8c45f68951f69eb825ef73>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at <6026956e4abc48a7aa322d4d816d9190>:0)
    UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at <6026956e4abc48a7aa322d4d816d9190>:0)
    UnityEngine.EventSystems.ExecuteEvents:Execute(GameObject, BaseEventData, EventFunction`1)
    ModifiedInputModule:ProcessMousePress(MouseButtonEventData, MouseButton)
    ModifiedInputModule:ProcessMouseEvent(Int32)
    ModifiedInputModule:ProcessMouseEvent()
    ModifiedInputModule:Process()
    UnityEngine.EventSystems.EventSystem:Update()
[WRN 14:44:13.032] [Debug] Launch location Invalid not registered!

...Then for any subsequent save attempt, this is produced:

Quote

[WRN 14:44:15.533] [Debug] Launch location Invalid not registered!
[ERR 14:44:15.617] [Debug] [SaveLoadManager]: IsBusy: Cannot save or load, save already in progress.

[ERR 14:44:15.618] [Debug] SaveLoadManager.TriggerFailure(): Called with failure code = Error_BusySaving!!!

[WRN 14:44:15.630] [Debug] Launch location Invalid not registered!

 

Edited March 12, 2023 by Tortoise