Love your mod, is a great addition to the game! Just want to report this red error on startup with the newest update. Feel free to delete this after you see it.

Exception in ConfigErrors() of WinterTaiga: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.BiomeDef+<ConfigErrors>d__66.MoveNext () [0x000e5] in <f479cd723d6442099849a01a67795020>:0
at Verse.DefDatabase`1[T].ErrorCheckAllDefs () [0x0006b] in <f479cd723d6442099849a01a67795020>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch5 (string)
Verse.DefDatabase`1<RimWorld.BiomeDef>:ErrorCheckAllDefs ()
System.Reflection.MonoMethod:Invoke (object,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)
System.Reflection.MethodBase:Invoke (object,object[])
Verse.GenGeneric:InvokeStaticMethodOnGenericType (System.Type,System.Type,string)
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__6_1 ()
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 ()