I'm not sure if this error is related to this mod but I found this error after I began to use this mod.
This is the error report:
Exception while saving SPM2.Patches.SimplePersonalitiesManagerM2: System.MissingMethodException: void Verse.Scribe_Collections.Look<!0,!1>(System.Collections.Generic.Dictionary`2<!!0, !!1>&,string,Verse.LookMode,Verse.LookMode,System.Collections.Generic.List`1<!!0>&,System.Collections.Generic.List`1<!!1>&,bool)
[Ref 8D1AF5A0]
at Verse.Scribe_Deep.Look[T] (T& target, System.Boolean saveDestroyedThings, System.String label, System.Object[] ctorArgs) [0x00167] in <6b57efcefce142ca8691b47f513bb507>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch6 (string)
Verse.Scribe_Deep:Look<Verse.GameComponent> (Verse.GameComponent&,bool,string,object[])
Verse.Scribe_Collections:Look<Verse.GameComponent> (System.Collections.Generic.List`1<Verse.GameComponent>&,bool,string,Verse.LookMode,object[])
Verse.Scribe_Collections:Look<Verse.GameComponent> (System.Collections.Generic.List`1<Verse.GameComponent>&,string,bool,Verse.LookMode,object[])
Verse.Scribe_Collections:Look<Verse.GameComponent> (System.Collections.Generic.List`1<Verse.GameComponent>&,string,Verse.LookMode,object[])
Verse.Game:ExposeSmallComponents ()
Verse.Game:ExposeData ()
Verse.Scribe_Deep:Look<Verse.Game> (Verse.Game&,bool,string,object[])
Verse.Scribe_Deep:Look<Verse.Game> (Verse.Game&,string,object[])
Verse.GameDataSaveLoader/<>c:<SaveGame>b__28_0 ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.SafeSaver.DoSave_Patch0 (string,string,System.Action)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.SafeSaver.Save_Patch0 (string,string,System.Action,bool)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.GameDataSaveLoader.SaveGame_Patch2 (string)
RimWorld.Autosaver:DoAutosave ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.LongEventHandler.UpdateCurrentSynchronousEvent_Patch0 (bool&)
Verse.LongEventHandler:LongEventsUpdate (bool&)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root.Update_Patch2 (Verse.Root)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root_Play.Update_Patch1 (Verse.Root_Play)