I'm not sure why my method would be causing errors in Achtung's. At most I add options to the float menu.

Does this happen without B&S?

When testing out the mods, I've had this happened, but after doing a clean install, it did go away (it didn't when I deleted B&S tho).

It must be another mod, removing Big and Small no longer fixes it for me

Error trying to make float menu: System.NullReferenceException: Object reference not set to an instance of an object
[Ref 43DC9519]
at RimWorld.FloatMenuMakerMap.GetProviderOptions (RimWorld.FloatMenuContext context, System.Collections.Generic.List`1[T] options) [0x00000] in <fcfab19af5d14a608a65ebd77f29482f>:0
at RimWorld.FloatMenuMakerMap.GetOptions (System.Collections.Generic.List`1[T] selectedPawns, UnityEngine.Vector3 clickPos, RimWorld.FloatMenuContext& context) [0x0012e] in <fcfab19af5d14a608a65ebd77f29482f>:0
- POSTFIX RedMattis.BetterPrerequisites: Void BigAndSmall.FloatMenuMakerMap_AddHumanlikeOrders_Patch:Postfix(List`1 selectedPawns, Vector3 clickPos, FloatMenuContext& context, List`1& __result)
at RimWorld.Selector.HandleMapClicks () [0x00090] in <fcfab19af5d14a608a65ebd77f29482f>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch3 (string)
RimWorld.Selector:HandleMapClicks ()
RimWorld.Selector:SelectorOnGUI ()
RimWorld.MapInterface:HandleLowPriorityInput ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:RimWorld.UIRoot_Play.UIRootOnGUI_Patch2 (RimWorld.UIRoot_Play)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root.OnGUI_Patch1 (Verse.Root)

It had listed deep storage and achtung, I removed both and got it down to just this error about big and small

Originally posted by Ioncloud:

Error trying to make float menu: System.NullReferenceException: Object reference not set to an instance of an object
[Ref 43DC9519]
at RimWorld.FloatMenuMakerMap.GetProviderOptions (RimWorld.FloatMenuContext context, System.Collections.Generic.List`1[T] options) [0x00000] in <fcfab19af5d14a608a65ebd77f29482f>:0
at RimWorld.FloatMenuMakerMap.GetOptions (System.Collections.Generic.List`1[T] selectedPawns, UnityEngine.Vector3 clickPos, RimWorld.FloatMenuContext& context) [0x0012e] in <fcfab19af5d14a608a65ebd77f29482f>:0
- POSTFIX RedMattis.BetterPrerequisites: Void BigAndSmall.FloatMenuMakerMap_AddHumanlikeOrders_Patch:Postfix(List`1 selectedPawns, Vector3 clickPos, FloatMenuContext& context, List`1& __result)
at RimWorld.Selector.HandleMapClicks () [0x00090] in <fcfab19af5d14a608a65ebd77f29482f>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch3 (string)
RimWorld.Selector:HandleMapClicks ()
RimWorld.Selector:SelectorOnGUI ()
RimWorld.MapInterface:HandleLowPriorityInput ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:RimWorld.UIRoot_Play.UIRootOnGUI_Patch2 (RimWorld.UIRoot_Play)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Root.OnGUI_Patch1 (Verse.Root)

It had listed deep storage and achtung, I removed both and got it down to just this error about big and small

Please upload your full log somewhere and link to that.

I can't reproduce issues with giving orders to pawns in my test lists.

Btw. I'd suggest verifying Rimworld files in case something is out of date or damaged. Steam very often messes up updates.