Missing the class attribute 'ExtensionOfNativeClass'

Question

After updating unity to the version 2018.3.7f1 I have tihs error in my released project:

 'Saves' is missing the class attribute 'ExtensionOfNativeClass'!
 'SavesForAllSlots' is missing the class attribute 'ExtensionOfNativeClass'!
 'Saves' is missing the class attribute 'ExtensionOfNativeClass'!
 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
 'SavesForAllSlots' is missing the class attribute 'ExtensionOfNativeClass'!
 UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
 ...

alt text

Why is tihs happening?

Saves.cs

 [System.Serializable]
 public class Saves
 {
     public string dateTime;
     public float transformPositionX;
     public float transformPositionY;
     public float transformPositionZ;
     public int latestSaveSlot;
     public int actNumber;
     public string sceneName;
     public int slotImage;
     public int currentActiveSlot;
     public int stepNumber;
 }

SavesForAllSlots.cs

 [System.Serializable]
 public class SavesForAllSlots
 {
     public int latestSaveSlotForAll;
 }

Answer 1

Best Answer

Answer by snar1sburg · May 24, 2019 at 11:35 PM

@dmitry-kozyr this was happening to me earlier today. What was happening is that I changed a script from inheriting MonoBehaviour to being a static class. After doing this I started to get errors. Turns out the original prefab object that was in my screen was still referencing this MonoBehaviour script. So I went to my prefab, deleted the script from it and it fixed these errors. I believe that static scripts don't need to be attached to GameObjects. If this doesn't work I am not sure what is wrong, I am also not an expert just an avid learner!

Add comment · Show 1 · Share

Diogyn · Apr 06, 2020 at 04:23 PM 0

Share

In order to have a script as a component, it has to inherit $$anonymous$$onoBehavior. But just like you, the prefab was still having the script as a component while I had removed it in the gameObject in the scene. It sounds more like a bug from Unity, even if, in the end, it's probably cleaner to force us to remove it from the Prefab (a more explicit error would be helpful) It also happens with non-static classes

Answer 2

Answer by Tosineben · Dec 10, 2019 at 08:42 PM

You have to create your save script in the script editor be it rider or android studio then copy input all the Data’s you want to save int it. After that you can add serializable to the class. Make sure you don’t create the class in unity or else it will create an inheritance of mono behavior with it.

Add comment · Share

Answer 3

Answer by MrBalin · 7 hours ago

PFF Wouldn't you know it, all I did was restart Unity and the error went away. No deleting neccesary.

Add comment · Share

Missing the class attribute 'ExtensionOfNativeClass'

3 Replies

Your answer

Welcome to Unity Answers

Follow this Question

Related Questions