GUI Error: You are pushing more GUIClips than you are popping, and more!

Unity Engine
1

Hi,
I am getting the following errors:

I am using normal Canvas based UI and tried things I have found googling but I am not able to fix this, especially the GUI popping problem. I would really appreciate some tips on how to approach this

I also get the following errors:

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.SceneView.CallOnPreSceneGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:3637)
UnityEditor.SceneView.DoOnPreSceneGUICallbacks (UnityEngine.Rect cameraRect) (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2216)
UnityEditor.SceneView.DoOnGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2298)
UnityEditor.SceneView.OnSceneGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2223)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:351)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&) (at /Users/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)

[code=CSharp]GUI Error: You are pushing more GUIClips than you are popping. Make sure they are balanced.
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&) (at /Users/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)

NullReferenceException: Object reference not set to an instance of an object
UnityEditor.SceneView.CallOnPreSceneGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:3637)
UnityEditor.SceneView.DoOnPreSceneGUICallbacks (UnityEngine.Rect cameraRect) (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2216)
UnityEditor.SceneView.DoOnGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2298)
UnityEditor.SceneView.OnSceneGUI () (at /Users/bokken/buildslave/unity/build/Editor/Mono/SceneView/SceneView.cs:2223)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:372)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:687)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Action onGUIHandler, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:659)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Boolean canAffectFocus) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:652)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUIRaw (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:618)
UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUI (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:607)
UnityEngine.UIElements.IMGUIContainer.HandleEvent (UnityEngine.UIElements.EventBase evt) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/IMGUIContainer.cs:535)
UnityEngine.UIElements.CallbackEventHandler.HandleEventAtTargetPhase (UnityEngine.UIElements.EventBase evt) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Events/EventHandler.cs:151)
UnityEngine.UIElements.EventDispatchUtilities.PropagateEvent (UnityEngine.UIElements.EventBase evt) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Events/IEventDispatchingStrategy.cs:74)
UnityEngine.UIElements.MouseEventDispatchingStrategy.SendEventToRegularTarget (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Events/MouseEventDispatchingStrategy.cs:35)
UnityEngine.UIElements.MouseEventDispatchingStrategy.SendEventToTarget (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Events/MouseEventDispatchingStrategy.cs:26)
UnityEngine.UIElements.MouseEventDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel iPanel) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Events/MouseEventDispatchingStrategy.cs:19)
UnityEngine.UIElements.EventDispatcher.ApplyDispatchingStrategies (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, System.Boolean imguiEventIsInitiallyUsed) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/EventDispatcher.cs:381)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/EventDispatcher.cs:344)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/EventDispatcher.cs:222)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/Panel.cs:417)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:468)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:211)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:74)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at /Users/bokken/buildslave/unity/build/ModuleOverrides/com.unity.ui/Core/UIElementsUtility.cs:28)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at /Users/bokken/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:189)
2

Looks like a bog-standard null reference error to me. Most likely you’re trying to display something, be it an image or text or whatever, that’s null. If you figure out the cause of the null ref, you’ll stop GUIClips error as well.

I get these errors on occasion working with custom inspectors where I forget to guard something with a null check, or something I thought should be there isn’t there due to erroneous code.

3

I have been spending so much time to try to solve this but not succeeded. Most surprised was I when I started a new project and got it very early but could still not find the source of the problem. I do not know what to do so I just leave it there for now.

4

This bug is now recreated by Unity and I assume they will take action accordingly.

2 Likes
5

They closed the bug with the resolution : wont fix.

(Note: I still see the error messages pop up randomly)

6 Likes
6

me2

7

Late to the party, but for future people…I started getting these errors and they seem to be something with Unity rather than my code. I would add images (no code), run it and get no problems. I would then add more images (no code), run it and bam I get this error. (Wasted Hours Trying To Figure It Out: 4 hours).

8

Me too

9

Yeah, I get this error any time I have something selected in the hierarchy and click run. Then the error gets thrown, I click something else in the hierarchy, and unpause - and things work just fine. It’s really weird.

10

This appears to be a bug with Unity that the devs have marked as won’t fix. It is clearly a common issue and not exactly low pain, so let’s continue to bug them on it.

1 Like
11

Are you all using Screen Space-Overly render mode by any chance?
If i deselect everything but TexCoord1 under Additional Shader Channels the error seems to go away for a while but the selection won’t stick.

12

I have the same problem with Unity 2022.2.10b. The problem seems to be a broken Unity menu. I have inserted and edited two particle systems. After the first playback, these errors suddenly appeared in huge numbers. Possible connection with the fact that with one of the two particle systems the “Particles” dialogue in the Scene View is simply missing. With the other PSystem it is there. If the particle system in question is deleted, no more errors appear. So it seems to be an error in the programme in my Unity version.

13

I am having the same issue for AR

14

My project only gives the errors if the problematic text is selected in the hierarchy. Strange :eyes:
I wonder if de-selecting the text in scene view hierarchy works for anyone else.

2 Likes
15

I tried this, and as long as I don’t select either the text or a parent in the hierarchy, the error does not occur. 2021.3.8f1.

4 Likes
16

You’re right thanks mate

17

I switched back my layout to default and the error seems to have stopped

2 Likes
18

Using 2021.3.18f1 and getting them on a regular base too.
Haven’t tried to get back to the default layout as I don’t want to! I just want to have the error gone, or at least know what is causing it!

19

You can save your current layout by going to Window>Layout>Save Layout. Then you can switch to default and back to your saved layout. I’m not sure if the error might cause issues with it saving your layout.

2 Likes
20

For me, it’s a layout bug. When I change the layout, it always works like a charm.