Exception filling window for Verse.FloatMenu: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.GenLabel.NewThingLabel (Verse.BuildableDef entDef, Verse.ThingDef stuffDef, System.Int32 stackCount) [0x00003] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.GenLabel.ThingLabel (Verse.BuildableDef entDef, Verse.ThingDef stuffDef, System.Int32 stackCount) [0x0004a] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.ThingDefCountClass.get_Label () [0x00000] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.RoyalTitleUtility+<>c.<BuildDifferenceExplanationText>b__1_13 (Verse.ThingDefCountClass r) [0x00000] in <cd7169108ea74757aa50c5b33d275c15>:0
at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at Verse.GenText.ToLineList (System.Collections.Generic.IEnumerable`1[T] entries, System.String prefix, System.Boolean capitalizeItems) [0x00047] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.RoyalTitleUtility.BuildDifferenceExplanationText (RimWorld.RoyalTitleDef currentTitle, RimWorld.RoyalTitleDef newTitle, RimWorld.Faction faction, Verse.Pawn pawn) [0x00e6d] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.Pawn_RoyaltyTracker.MakeLetterTextForTitleChange (Verse.Pawn pawn, RimWorld.Faction faction, RimWorld.RoyalTitleDef currentTitle, RimWorld.RoyalTitleDef newTitle, System.String& headline, System.String& body) [0x000a1] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.Pawn_RoyaltyTracker.MakeLetterTextForTitleChange (Verse.Pawn pawn, RimWorld.Faction faction, RimWorld.RoyalTitleDef currentTitle, RimWorld.RoyalTitleDef newTitle) [0x00000] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.Pawn_RoyaltyTracker.OnPreTitleChanged (RimWorld.Faction faction, RimWorld.RoyalTitleDef currentTitle, RimWorld.RoyalTitleDef newTitle, System.Boolean sendLetter) [0x000c2] in <cd7169108ea74757aa50c5b33d275c15>:0
at (wrapper dynamic-method) RimWorld.Pawn_RoyaltyTracker.RimWorld.Pawn_RoyaltyTracker.SetTitle_Patch1(RimWorld.Pawn_RoyaltyTracker,RimWorld.Faction,RimWorld.RoyalTitleDef,bool,bool,bool)
at CharacterEditor.NameTool.SetTitle (Verse.Pawn pawn, System.String defName) [0x00059] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.CEditor+EditorUI+BlockBio.ASetTitle (RimWorld.RoyalTitleDef r) [0x0001c] in <31aeedd25e67475286a4c61702d6ebc1>:0
at CharacterEditor.SZWidgets+<>c__DisplayClass38_1`1[T].<FloatMenuOnRect>b__0 () [0x00013] in <31aeedd25e67475286a4c61702d6ebc1>:0
at Verse.FloatMenuOption.Chosen (System.Boolean colonistOrdering, Verse.FloatMenu floatMenu) [0x00030] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.FloatMenuOption.DoGUI (UnityEngine.Rect rect, System.Boolean colonistOrdering, Verse.FloatMenu floatMenu) [0x00535] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.FloatMenu.DoWindowContents (UnityEngine.Rect rect) [0x000fb] in <cd7169108ea74757aa50c5b33d275c15>:0
at (wrapper dynamic-method) Verse.Window.Verse.Window.InnerWindowOnGUI_Patch0(Verse.Window,int)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch5 (string)
(wrapper dynamic-method) Verse.Window:Verse.Window.InnerWindowOnGUI_Patch0 (Verse.Window,int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)

https://gist.github.com/HugsLibRecordKeeper/1a41850700be0d4883e65290d72a6472

@Scorpio what's the exact issue and do you know that this mod is certain to cause it?

found the the issue its [FSF] FrozenSnowFox Tweaks , it has a tweak to remove techprints.
your mod really needs those ( first time i see an issue of this nature) .

its worth putting alert on description regarding this

Exception ticking VFED_ImperialUnderfarm4459379 (at (57, 0, 152)): System.TypeLoadException: Could not resolve type with token 01000059 (from typeref, class/assembly DubsBadHygiene.CompPipe, BadHygiene, Version=2.7.7273.33335, Culture=neutral, PublicKeyToken=null)
at ImperialFunctionality.CompUnderfarmSpawner.WaterMainNearby () [0x00052] in <9983b2cd3edf4084a98f0d27f435cd7c>:0
at ImperialFunctionality.CompUnderfarmSpawner.get_CanOperate () [0x0000d] in <9983b2cd3edf4084a98f0d27f435cd7c>:0
at ImperialFunctionality.CompImperialSpawner.TickInterval (System.Int32 interval) [0x00000] in <9983b2cd3edf4084a98f0d27f435cd7c>:0
at ImperialFunctionality.CompImperialSpawner.CompTick () [0x00000] in <9983b2cd3edf4084a98f0d27f435cd7c>:0
at Verse.ThingWithComps.Tick () [0x00024] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.TickList.Tick () [0x0015c] in <cd7169108ea74757aa50c5b33d275c15>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch4 (string)
Verse.TickList:Tick ()
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch5 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch2 (Verse.Game)
(wrapper dynamic-method) Verse.Root_Play:Verse.Root_Play.Update_Patch1 (Verse.Root_Play)

Techite disc Stacks are called "Techie Disc Stack"

Exception in RimWorld.QuestGen.QuestNode.TestRun: System.NullReferenceException: Object reference not set to an instance of an object
[Ref 94F1F2ED]
at ImperialFunctionality.QuestNode_AnyRoyalColonists+<>c.<TestRunInt>b__1_0 (Verse.Pawn x) [0x0000b] in <cb1631e5f5a041939617bbf1e3ced8b9>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Int32 startIndex, System.Int32 count, System.Predicate`1[T] match) [0x0003b] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Predicate`1[T] match) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Verse.GenCollection.Any[T] (System.Collections.Generic.List`1[T] list, System.Predicate`1[T] predicate) [0x00000] in <59e863dd41f643f2aafda4b64917c94c>:0
at ImperialFunctionality.QuestNode_AnyRoyalColonists.TestRunInt (RimWorld.QuestGen.Slate slate) [0x0001c] in <cb1631e5f5a041939617bbf1e3ced8b9>:0
at RimWorld.QuestGen.QuestNode.TestRun (RimWorld.QuestGen.Slate slate) [0x00021] in <59e863dd41f643f2aafda4b64917c94c>:0
- TRANSPILER net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)
some bug red log ,hope your reply

Originally posted by csc001:

Exception in RimWorld.QuestGen.QuestNode.TestRun: System.NullReferenceException: Object reference not set to an instance of an object
[Ref 94F1F2ED]
at ImperialFunctionality.QuestNode_AnyRoyalColonists+<>c.<TestRunInt>b__1_0 (Verse.Pawn x) [0x0000b] in <cb1631e5f5a041939617bbf1e3ced8b9>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Int32 startIndex, System.Int32 count, System.Predicate`1[T] match) [0x0003b] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Predicate`1[T] match) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Verse.GenCollection.Any[T] (System.Collections.Generic.List`1[T] list, System.Predicate`1[T] predicate) [0x00000] in <59e863dd41f643f2aafda4b64917c94c>:0
at ImperialFunctionality.QuestNode_AnyRoyalColonists.TestRunInt (RimWorld.QuestGen.Slate slate) [0x0001c] in <cb1631e5f5a041939617bbf1e3ced8b9>:0
at RimWorld.QuestGen.QuestNode.TestRun (RimWorld.QuestGen.Slate slate) [0x00021] in <59e863dd41f643f2aafda4b64917c94c>:0
- TRANSPILER net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)
some bug red log ,hope your reply

Should Be Fixed

https://gist.github.com/HugsLibRecordKeeper/c44cd0aa1632f3403fd219e4a4ede217
tired to use dev mode to call quest.

error with title of VFEE https://gist.github.com/HugsLibRecordKeeper/a9e0a721c200def74d7ab4e87f96aa84

https://gist.github.com/HugsLibRecordKeeper/b65e4701903cf7848fbb7f0318140cb1 here the logs for you

https://gist.github.com/HugsLibRecordKeeper/c44cd0aa1632f3403fd219e4a4ede217 other log for tired using brute force to call the quest.