System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.PredatorThreat.get_Expired () [0x00000] in <filename unknown>:0
at RimWorld.Faction.FactionTick () [0x00000] in <filename unknown>:0
at RimWorld.FactionManager.FactionManagerTick () [0x00000] in <filename unknown>:0
at RimWorld.Planet.World.WorldTick () [0x00000] in <filename unknown>:0
at Verse.TickManager.DoSingleTick () [0x00000] in <filename unknown>:0
Verse.Log:Error(String)
Verse.TickManager:DoSingleTick()
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update()
Error message will continue to generate infinitely.
at RimWorld.PredatorThreat.get_Expired () [0x00000] in <filename unknown>:0
at RimWorld.Faction.FactionTick () [0x00000] in <filename unknown>:0
at RimWorld.FactionManager.FactionManagerTick () [0x00000] in <filename unknown>:0
at RimWorld.Planet.World.WorldTick () [0x00000] in <filename unknown>:0
at Verse.TickManager.DoSingleTick () [0x00000] in <filename unknown>:0
Verse.Log:Error(String)
Verse.TickManager:DoSingleTick()
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update()
Error message will continue to generate infinitely.