NullReferenceException: Object reference not set to an instance of an object

at ImTheWorkerNow.ITWN.PostMenuOption (System.Collections.Generic.List`1 list, Verse.Pawn pawn, Verse.Thing target, System.String title, System.Action action, MenuOptionPriority priority, System.Action mouseoverGuiAction, Verse.Thing revalidateClickTarget, Single extraPartWidth, System.Func`2 extraPartOnGUI, Verse.WorkTypeDef workType) [0x00000] in <filename unknown>:0

at ImTheWorkerNow.FloatMenuMakerMap_Detour.AddUndraftedOrders (Vector3 clickPos, Verse.Pawn pawn, System.Collections.Generic.List`1 opts) [0x00000] in <filename unknown>:0

at RimWorld.FloatMenuMakerMap.ChoicesAtFor (Vector3 clickPos, Verse.Pawn pawn) [0x00000] in <filename unknown>:0

at AchtungMod.FloatMenuMakerMap_Patch.FloatMenuMakerMap_ChoicesAtFor (Vector3 clickPos, Verse.Pawn pawn) [0x00000] in <filename unknown>:0

at AchtungMod.Controller.MouseDown (Vector3 pos) [0x00000] in <filename unknown>:0

at AchtungMod.Controller.HandleEvents () [0x00000] in <filename unknown>:0

at AchtungMod.MainTabsRoot_Patch.MainTabsRoot_HandleLowPriorityShortcuts () [0x00000] in <filename unknown>:0

at RimWorld.UIRootMap.UIRootOnGUI () [0x00000] in <filename unknown>:0

at Verse.Root.OnGUI () [0x00000] in <filename unknown>:0

I'm not entirely sure if the Cults thing is causing this, but I can't seem to interact with the cultist that joined my colony in certain ways, i.e. any right click options (such as arrest, no context menu appears), or treating them when injured. I don't remember if they could do it before I got her a psionic brain though. Attempting to interact with her gives a "Object reference not set to an instance of an object" (below is snipped from the output log) error in the ingame debug log. She's also the preacher of the cult.