I haven't tried the latest version properly yet. Didn't actually mean to have it active for this as I have WAY too many mods right now, but I randomly got this error on world generation:
Regenerating the world a few times, the error went away
Code Select
Error in WorldGenStep: System.NullReferenceException: Object reference not set to an instance of an object
at WhatTheHack.Harmony.Pawn_HealthTracker_MakeDowned.Postfix (Verse.Pawn_HealthTracker) <0x0007c>
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.MakeDowned_Patch3 (object,System.Nullable`1<Verse.DamageInfo>,Verse.Hediff) <0x00a3b>
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.CheckForStateChange_Patch3 (object,System.Nullable`1<Verse.DamageInfo>,Verse.Hediff) <0x0052e>
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.AddHediff_Patch2 (object,Verse.Hediff,Verse.BodyPartRecord,System.Nullable`1<Verse.DamageInfo>) <0x00269>
at RimWorld.AgeInjuryUtility.GenerateRandomOldAgeInjuries (Verse.Pawn,bool) <0x00786>
at (wrapper dynamic-method) Verse.PawnGenerator.GenerateInitialHediffs_Patch1 (Verse.Pawn,Verse.PawnGenerationRequest) <0x00035>
at Verse.PawnGenerator.TryGenerateNewNakedPawn (Verse.PawnGenerationRequest&,string&,bool) <0x0070c>
at (wrapper dynamic-method) Verse.PawnGenerator.GenerateNewNakedPawn_Patch1 (Verse.PawnGenerationRequest&) <0x0021d>
at (wrapper dynamic-method) Verse.PawnGenerator.GeneratePawnInternal_Patch1 (Verse.PawnGenerationRequest) <0x00aaa>
at (wrapper dynamic-method) Verse.PawnGenerator.GeneratePawn_Patch1 (Verse.PawnGenerationRequest) <0x000c1>
at Verse.PawnGenerator.GeneratePawn (Verse.PawnKindDef,RimWorld.Faction) <0x0020b>
at RimWorld.Faction.GenerateNewLeader () <0x00294>
at RimWorld.FactionGenerator.NewGeneratedFaction (RimWorld.FactionDef) <0x0037e>
at RimWorld.FactionGenerator.GenerateFactionsIntoWorld () <0x00087>
at RimWorld.Planet.WorldGenStep_Factions.GenerateFresh (string) <0x00048>
at (wrapper dynamic-method) RimWorld.Planet.WorldGenerator.GenerateWorld_Patch2 (single,string,RimWorld.Planet.OverallRainfall,RimWorld.Planet.OverallTemperature) <0x002c2>
Verse.Log:Error(String)
RimWorld.Planet.WorldGenerator:GenerateWorld_Patch2(Single, String, OverallRainfall, OverallTemperature)
RimWorld.Page_CreateWorldParams:<CanDoNext>m__0()
Verse.LongEventHandler:RunEventFromAnotherThread(Action)
Verse.LongEventHandler:<UpdateCurrentAsynchronousEvent>m__1()
Regenerating the world a few times, the error went away