Log: https://gist.github.com/HugsLibRecordKeeper/52522d1e052508496e8f775f72e60073

Specific error it spits:
Exception filling window for CharacterEditor.MainTabWindow_CharacterEditor: System.NullReferenceException: Object reference not set to an instance of an object
at CharacterEditor.PawnKindTool.ListOfRaces (System.Boolean humanlike, System.Boolean nonhumanlike) [0x00059] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI+BlockPawnList.UpdateRaceList () [0x00062] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI+BlockPawnList.ChangeList (System.String listname) [0x00070] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI+BlockPawnList.ReloadList () [0x00006] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI.PreselectPawn (Verse.Pawn pawn) [0x002c6] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI.Start (Verse.Pawn pawn) [0x00015] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+ModData.StartEditor (Verse.Pawn pawn) [0x00007] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor.StartEditor (Verse.Pawn pawn) [0x00000] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.MainTabWindow_CharacterEditor.DoWindowContents (UnityEngine.Rect inRect) [0x00006] in <31aeedd25e67475286a4c61702d6ebc1>:0
at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001d3] in <cd7169108ea74757aa50c5b33d275c15>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch3 (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)

Ruled out:
Ruled out:
all Vanilla Extended Race mods
RimEffect Races
MechHumanlikes and its additions.
RW androids for 1.4 and its additions
Rim Arsenal Xenotype Pack - Askbarn