System.NullReferenceException: Object reference not set to an instance of an object
at Spaceports.Letters.MedevacTracker.Check () [0x00000] in <0d7c8adb920948f08f39734bdad99d82>:0
at Spaceports.SpaceportsMapComp.MapComponentTick () [0x00041] in <0d7c8adb920948f08f39734bdad99d82>:0
at Verse.MapComponentUtility.MapComponentTick (Verse.Map map) [0x00013] in <95de19971c5d40878d8742747904cdcd>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
Verse.MapComponentUtility:MapComponentTick (Verse.Map)
Verse.Map:MapPostTick ()
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch4 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch1 (Verse.Game)
Verse.Root_Play:Update ()

Cant figure out how to stop this event from causing erorrs. disabled it and restarted game to no avail. Nothing in events or game condition.

Update: disabling mod, loading/saving game, re-enabling mod fixed the problems with seemingly no consequences.