System.MissingMethodException: void Verse.Gizmo.set_Order(single)
at RPGTraits.RPGTracker.CreateGizmoMentalPower () [0x00000] in <b99cb1d2874a4a06ad34a9cb95ce0da8>:0
at RPGTraits.RPGTracker+<CompGetGizmosExtra>d__20.MoveNext () [0x0006a] in <b99cb1d2874a4a06ad34a9cb95ce0da8>:0
at Verse.ThingWithComps+<GetGizmos>d__33.MoveNext () [0x000f3] in <81af9f8a18324e17b286924a43555a7c>:0
at Verse.Pawn+<GetGizmos>d__234.MoveNext () [0x000f1] in <81af9f8a18324e17b286924a43555a7c>:0
at System.Collections.Generic.List`1[T]..ctor (System.Collections.Generic.IEnumerable`1[T] collection) [0x00077] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x00018] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at (wrapper dynamic-method) TorannMagic.TorannMagicMod.TorannMagic.TorannMagicMod.Pawn_Gizmo_TogglePatch_Patch0(System.Collections.Generic.IEnumerable`1<Verse.Gizmo>&,Verse.Pawn&)
at (wrapper dynamic-method) Verse.Pawn.Verse.Pawn.GetGizmos_Patch11(Verse.Pawn)
at PerformanceOptimizer.Optimization_InspectGizmoGrid_DrawInspectGizmoGridFor.GetGizmosFast (Verse.ISelectable selectable) [0x0000f] in <654a4c5eeacc4f4196771b289db2753c>:0
at (wrapper dynamic-method) RimWorld.InspectGizmoGrid.RimWorld.InspectGizmoGrid.DrawInspectGizmoGridFor_Patch0(System.Collections.Generic.IEnumerable`1<object>,Verse.Gizmo&)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch3 (string)
Verse.Log:ErrorOnce (string,int)
(wrapper dynamic-method) RimWorld.InspectGizmoGrid:RimWorld.InspectGizmoGrid.DrawInspectGizmoGridFor_Patch0 (System.Collections.Generic.IEnumerable`1<object>,Verse.Gizmo&)
RimWorld.MainTabWindow_Inspect:DrawInspectGizmos ()
RimWorld.InspectPaneUtility:ExtraOnGUI (RimWorld.IInspectPane)
RimWorld.MainTabWindow_Inspect:ExtraOnGUI ()
Verse.WindowStack:WindowStackOnGUI ()
(wrapper dynamic-method) RimWorld.UIRoot_Play:RimWorld.UIRoot_Play.UIRootOnGUI_Patch2 (RimWorld.UIRoot_Play)
(wrapper dynamic-method) Verse.Root:Verse.Root.OnGUI_Patch1 (Verse.Root)

i also encountered this problem

Me three

Still running 1.3. Errors out for Pawns but not for animals.

This has been happening with me as well. I noticed it while using the character editor to try and find out what traits were causing the draft and other buttons to disappear, and it was only traits that added new abilities due to this mod.

Same, too bad as I was just starting a new save file, and this mod would have been fun!