After I bought and activated Biotech, the Numbers Tab no longer opens.
The Wildlife tab also wouldn't open until I changed the options to release it from Numbers' control.

Here's the HugsLib log:

Root level exception in OnGUI(): System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.Pawn_GeneTracker.get_CustomXenotype () [0x0003d] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.GeneUtility.IsBaseliner (Verse.Pawn pawn) [0x0002d] in <95de19971c5d40878d8742747904cdcd>:0
at Verse.Pawn.get_DescriptionFlavor () [0x00000] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.StatsReportUtility.DescriptionEntry (Verse.Thing thing) [0x00014] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.StatsReportUtility+<StatsToDraw>d__26.MoveNext () [0x00057] in <95de19971c5d40878d8742747904cdcd>:0
at System.Linq.Enumerable+ConcatIterator`1[TSource].MoveNext () [0x0002b] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.Enumerable+WhereSelectEnumerableIterator`2[TSource,TResult].ToArray () [0x0003e] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.Buffer`1[TElement]..ctor (System.Collections.Generic.IEnumerable`1[T] source) [0x0000a] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.OrderedEnumerable`1[TElement].ToList () [0x00000] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) [0x0001f] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at Numbers.MainTabWindow_Numbers.GetHumanLikeStatDefs () [0x00141] in <9ff61b29a7ab468ba28486fbf1f24cff>:0
at Numbers.MainTabWindow_Numbers..ctor () [0x00085] in <9ff61b29a7ab468ba28486fbf1f24cff>:0
at (wrapper managed-to-native) System.Reflection.MonoCMethod.InternalInvoke(System.Reflection.MonoCMethod,object,object[],System.Exception&)
at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00002] in <eae584ce26bc40229c1b1aa476bfa589>:0
--- End of inner exception stack trace ---
at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) [0x00014] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x000a8] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x00020] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Activator.CreateInstance (System.Type type) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at RimWorld.MainButtonDef.get_TabWindow () [0x00016] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainTabsRoot.ToggleTab (RimWorld.MainButtonDef newTab, System.Boolean playSound) [0x00065] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainButtonWorker_ToggleTab.Activate () [0x00005] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainButtonWorker.InterfaceTryActivate () [0x0008d] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainButtonWorker.DoButton (UnityEngine.Rect rect) [0x000ee] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainButtonsRoot.DoButtons () [0x00119] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.MainButtonsRoot.MainButtonsOnGUI () [0x0000e] in <95de19971c5d40878d8742747904cdcd>:0
at RimWorld.UIRoot_Play.UIRootOnGUI () [0x00037] in <95de19971c5d40878d8742747904cdcd>:0
at (wrapper dynamic-method) Verse.Root.Verse.Root.OnGUI_Patch1(Verse.Root)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
(wrapper dynamic-method) Verse.Root:Verse.Root.OnGUI_Patch1 (Verse.Root)


I hope all these heiroglyphics help, I really like Numbers and miss being able to use it.

I do know Biotech seems to be the main difference, as my mods never changed aside from Biotech.
And it worked perfectly fine before that.