[LOG]

Failed to find Verse.HediffDef named CosmicHorror_SanityLoss. There are 168 defs of this type loaded.
Verse.Log:Error(String)
Verse.DefDatabase`1:GetNamed(String, Boolean)
Verse.HediffDef:Named(String)
ArkhamEstate.JobDriver_FreeWrite:<MakeNewToils>b__3_1()
Verse.AI.Toil:Cleanup()
Verse.AI.JobDriver:Cleanup(JobCondition)
Verse.AI.Pawn_JobTracker:CleanupCurrentJob(JobCondition, Boolean, Boolean)
Verse.AI.Pawn_JobTracker:EndCurrentJob(JobCondition, Boolean)
Verse.AI.JobDriver:EndJobWith(JobCondition)
RimWorld.JoyUtility:JoyTickCheckEnd(Pawn, JoyTickFullJoyAction, Single)
ArkhamEstate.JobDriver_FreeWrite:<MakeNewToils>b__3_0()
Verse.AI.JobDriver:DriverTick()
Verse.AI.Pawn_JobTracker:JobTrackerTick()
Verse.Pawn:Tick()
Verse.TickList:Tick()
Verse.TickManager:DoSingleTick()
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update()

[END LOG]

I get this after loading my unaltered game i started yesterday. The only major thing i did was change maps for my main settlement (bombarderated the old one, everything was fire!)

I've had invasions of these things before but its now broken or something maybe. No idea what this even is but i figured i'd mention it.