So this mod has some compatibility issue that I can't figure out. With the mod by itself world generation works, if I add it to my existing mod list, it fails

https://gist.github.com/a3a6c1ecd36fbbfd22aa3df84f34f169

This is the error
Exception from asynchronous event: System.TypeInitializationException: The type initializer for 'AlienRace.HarmonyPatches' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object
at AlienRace.HarmonyPatches..cctor () [0x0204b] in <f809b4e2169f4046905e813d4002ebdd>:0
--- End of inner exception stack trace ---
at (wrapper dynamic-method) RimWorld.Faction.RimWorld.Faction.TryMakeInitialRelationsWith_Patch2(RimWorld.Faction,RimWorld.Faction)
at RimWorld.FactionGenerator.NewGeneratedFaction (RimWorld.FactionGeneratorParms parms) [0x0017c] in <da600864a9db4f8087fd0b640e5c28b6>:0
at RimWorld.ScenPart_PlayerFaction.PostWorldGenerate () [0x00022] in <da600864a9db4f8087fd0b640e5c28b6>:0
at RimWorld.Scenario.PostWorldGenerate () [0x00014] in <da600864a9db4f8087fd0b640e5c28b6>:0
at RimWorld.Planet.WorldGenerator.GenerateWorld (System.Single planetCoverage, System.String seedString, RimWorld.Planet.OverallRainfall overallRainfall, RimWorld.Planet.OverallTemperature overallTemperature, RimWorld.Planet.OverallPopulation population, System.Collections.Generic.List`1[T] factions, System.Single pollution) [0x00169] in <da600864a9db4f8087fd0b640e5c28b6>:0
at RimWorld.Page_CreateWorldParams.<CanDoNext>b__19_0 () [0x0000f] in <da600864a9db4f8087fd0b640e5c28b6>:0
at Verse.LongEventHandler.RunEventFromAnotherThread (System.Action action) [0x00008] in <da600864a9db4f8087fd0b640e5c28b6>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch4 (string)
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__27_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()

Originally posted by Darrien:

So this mod has some compatibility issue that I can't figure out. With the mod by itself world generation works, if I add it to my existing mod list, it fails

https://gist.github.com/a3a6c1ecd36fbbfd22aa3df84f34f169

This is the error
...

Looks like a conflict between XML and HAR. Make sure you have the latest version of both mods. Try to run without XML. But one way or another, this error has only an indirect connection with my mod and refers to HAR.

I thought XML Extensions was a required mod?

Originally posted by Darrien:

I thought XML Extensions was a required mod?

Yes, but for debugging, I added the ability to disable it. I do not recommend trying to play without it, this option is only for testing and development.