does anybody know what might cause this error

Root level exception in OnGUI(): System.NullReferenceException: Object reference not set to an instance of an object
at

issues generating world when using the dev quickstart, or no dev tools at all. And if the world loads, I get the "NullReferenceException: Object reference not set to an instance of an object" errors.
It
seems quite inconsistent to me as well and I can't find what is causing it. RimPy does not show any error.

I kind of gave up and haven't tried to play for weeks now because of this. [/quote]

In my case

reference not set to an instance of an object
at Verse.KeyBindingDef.get_JustPressed () <0x00029>
at Verse.ScreenshotTaker.Update () <0x0003f>
at Verse.UIRoot.UIRootUpdate () <0x0001c>
at
:<>m__0(Int32)
UnityEngine.GUI:CallWindowDelegate(WindowFunction, Int32, Int32, GUISkin, Int32, Single, Single, GUIStyle)

Root level exception in Update(): System.NullReferenceException: Object

[[RimHUD Auto-deactivation report]]
Object reference not set to an instance of an object

Stacktrace:
[Assembly-CSharp: [searchmatch]Object[/searchmatch] reference not set to an instance of an object]
at
RimWorld.Pawn_TrainingTracker.CanAssignToTrain (RimWorld.TrainableDef td, System.Boolean& visible) [0x00169] in <00638943358e4807bd44cd7bc8f572da>:0
at RimWorld.TrainingCardUtility.TotalHeightForPawn (Verse.Pawn p) [0x0002d] in <00638943358e

Last log file errors

Exception filling window for RimWorld.MainTabWindow_Research: System.NullReferenceException: Object reference not set to an instance of an object
at
: C:\buildslave\unity\build\Runtime/Export/Debug/Debug.bindings.h Line: 39)

Exception filling window for RimWorld.MainTabWindow_Research: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.StudyManager.StudyComplete

()
Verse.LongEventHandler:RunEventFromAnotherThread(Action)
Verse.LongEventHandler:<UpdateCurrentAsynchronousEvent>m__1()

Could not do PostLoadInit on Verse.AI.Group.Lord: System.NullReferenceException: Object reference not set to an instance of an object
)
Verse.Root_Play:Update()

System.NullReferenceException: Object reference not set to an instance of an object
at Verse.AI.Group.Lord.LordTick () [0x00000] in <filename unknown>:0
at

likely futher down the line with error System.NullReferenceException: Object reference not set to an instance of an object
at AdeptusMechanicus.Comp_Regeneration.get_canHeal () [0x0002c] in <55b01bb0998e
) Verse.Root_Play:Verse.Root_Play.Update_Patch0 (Verse.Root_Play)




Exception ticking Rotzbugus (at (29, 0, 189)): System.NullReferenceException: Object reference not set to an instance of an object
at (wrapper dynamic-method

()
Verse.LongEventHandler:RunEventFromAnotherThread(Action)
Verse.LongEventHandler:<UpdateCurrentAsynchronousEvent>m__1()

Could not do PostLoadInit on Verse.AI.Group.Lord: System.NullReferenceException: Object reference not set to an instance of an object
)
Verse.LongEventHandler:<UpdateCurrentAsynchronousEvent>m__1()

System.NullReferenceException: Object reference not set to an instance of an object
at Verse.AI.Group.Lord.LordTick () [0x00000] in <filename unknown>:0
at

change jobs at all.

Dev mode log isnt much help to me either.
as all it spams as the pawn stands still is-

Exception ticking Gitta (at (62, 0, 78)): System.NullReferenceException: Object reference not
set to an instance of an object
[Ref F0405585] Duplicate stacktrace, see ref for original

No clue what mod could be causing it. but this is my last ditch effort to hopefully have someone point it out

Got this error while accepting a prisonner quest with Dev On:

Error while processing a quest signal: System.NullReferenceException: Object reference not set to an instance of an object
at
Cities.Pawn_DropAndForbidEverything.Prefix (Verse.Pawn& __instance) [0x00007] in <52125d4193284ebbbf09571722b28baa>:0
at (wrapper dynamic-method) Verse.Pawn.DMD<DMD<DropAndForbidEverything_Patch1>?1606064512::DropAndForbidEverything_Patch