JobDriver tick for pawn Mech_Cleansweeper710679 driver=JobDriver_CleanOil (toilIndex=2)
System.NullReferenceException: Object reference not set to an instance of an object.
at
error: (Taken from Hugs logs)

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

reference not set to an instance of an object
at RimWorld.Planet.WorldObject.get_Label () [0x00000] in <filename unknown>:0
at RimWorld.Planet.WorldObject.get_LabelCap () [0x00000] in <filename unknown
()
Verse.GameAndMapInitExceptionHandlers:ErrorWhileLoadingGame(Exception)
Verse.LongEventHandler:RunEventFromAnotherThread(Action)
Verse.LongEventHandler:<UpdateCurrentAsynchronousEvent>m__733()


Exception from asynchronous event: System.NullReferenceException: Object

Exception from asynchronous event: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.Planet.WorldObject.get_Label () [0x00000] in <filename unknown>:0

at RimWorld.Planet.WorldObject.get_LabelCap () [0x00000] in <filename unknown>:0
at RimWorld.Planet.WorldObject.ToString () [0x00000] in <filename unknown>:0
at

)): System.NullReferenceException: Object reference not set to an instance of an object
[Ref 7D06E276] Duplicate stacktrace, see ref for original
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method
(Verse.Root_Play)[/code]
and also

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

Exception ticking Lumi (at (91, 0, 89)): System.NullReferenceException: Object reference not set to an instance of an object
[Ref 986F79E2]
at AlphaGenes.Hediff_MineralOverdrive.get_ShouldRemove
b02c73b55f389fe>:0
- POSTFIX Mlie.YayosCombat3: Void yayoCombat.HarmonyPatches.Pawn_Tick:Postfix(Pawn __instance)
at Verse.Thing.DoTick () [0x0007b] in <24d25868955f4df08b02c73b55f389fe>:0

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

: Object reference not set to an instance of an object
[Ref D1823856] Duplicate stacktrace, see ref for original
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method
a mod conflict or something else (I am not using any DLC).

The log files from when this bug appear is the following:
Exception filling window for RimWorld.Dialog_Trade: System.NullReferenceException