Why does KSP claim that my save file is "Incompatible with this version of ksp"?

[GarrettKajmowicz]

I'm running 64-bit KSP on Linux. I had the game running on 1.1.1 without much trouble.

I tried using the patcher, which left me with a binary which didn't do much of anything. So I backed up my save persistent.sfs file, wiped my install directory, did a fresh extraction of KSP and restored my save file.

Now when I go to start I'm told that my save file is "Incompatible with this version of KSP". This doesn't make sense to me. If 1.0.5 ->1.1.0 had broken, I could understand. This was a minor patch release.

From my player.log:

 

No save file found for path: /home/garrett/KSP_linux/KSP_Data/../saves/default/persistent.sfs

(Filename: /home/builduser/buildslave/unity/build/artifacts/generated/common/runtime/UnityEngineDebugBindings.gen.cpp Line: 64)

NullReferenceException: Object reference not set to an instance of an object
  at SaveUpgradePipeline.NodeUtil.GetCfgVersion (.ConfigNode n, LoadContext loadContext) [0x00000] in <filename unknown>:0
  at KSPUpgradePipeline.Process (.ConfigNode n, System.String saveName, LoadContext loadContext, .Callback`1 onSucceed, .Callback`2 onFail) [0x00000] in <filename unknown>:0
  at MainMenu.OnLoadDialogFinished (System.String save) [0x00000] in <filename unknown>:0
  at LoadGameDialog.ConfirmLoadGame () [0x00000] in <filename unknown>:0
  at LoadGameDialog+^H^O.^C (Boolean ^A) [0x00000] in <filename unknown>:0
  at DialogGUIToggleButton.<Create>m__82D (Boolean b) [0x00000] in <filename unknown>:0
  at UnityEngine.Events.InvokableCall`1[System.Boolean].Invoke (System.Object[] args) [0x00000] in <filename unknown>:0
  at UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
  at UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
  at UnityEngine.Events.UnityEvent`1[System.Boolean].Invoke (Boolean arg0) [0x00000] in <filename unknown>:0
  at UnityEngine.UI.Toggle.Set (Boolean value, Boolean sendCallback) [0x00000] in <filename unknown>:0
  at UnityEngine.UI.Toggle.Set (Boolean value) [0x00000] in <filename unknown>:0
  at UnityEngine.UI.Toggle.set_isOn (Boolean value) [0x00000] in <filename unknown>:0
  at UnityEngine.UI.Toggle.InternalToggle () [0x00000] in <filename unknown>:0
  at UnityEngine.UI.Toggle.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <filename unknown>:0
  at UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <filename unknown>:0
  at UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.EventFunction`1 functor) [0x00000] in <filename unknown$
UnityEngine.Debug:Internal_LogException(Exception, Object)
UnityEngine.Debug:LogException(Exception)
UnityEngine.EventSystems.ExecuteEvents:Execute(GameObject, BaseEventData, EventFunction`1)
UnityEngine.EventSystems.StandaloneInputModule:ProcessMousePress(MouseButtonEventData)
UnityEngine.EventSystems.StandaloneInputModule:ProcessMouseEvent(Int32)
UnityEngine.EventSystems.StandaloneInputModule:ProcessMouseEvent()
UnityEngine.EventSystems.StandaloneInputModule:Process()
UnityEngine.EventSystems.EventSystem:Update()

(Filename:  Line: -1)
 

[Superfluous J]

Does /home/garrett/KSP_linux/saves/default/persistent.sfs exist?

If not, hopefully you have a quicksave.sfs in the same folder, or just take whatever the latest *.sfs file is if any. Copy it to persistent.sfs and hope.

Edited May 4, 2016 by 5thHorseman