Serialization layout and asset bundles

Hello,

We are currently working on a UWP version of our game and have ran into a problem.
We are getting the

Some of our scripts have variables enclosed in #if UNITY_EDITOR condition. If such a script is attached to a prefab that is part of an asset bundle, then the above mentioned error will appear.

My guess is that when the asset bundles are being built, the UNITY_EDITOR token is valid, so the variables that are wrapped by the #if UNITY_EDITOR condition are also serialized. I'm not sure if this is a bug or a feature, but I would like to know how I can handle this case.

I can provide a small test project if required that demonstrates the problem.

 

You can work around this by repositioning the #if UNITY_EDITOR so that any serialized fields is still there on device.

This will cause the error.

Code (csharp):

1. public class SomeClass : Monobehaviour
2. {
3. #if UNITY_EDITOR
4.     public float SerializedField; // This field is missing on device and will cause an error
5.  
6.     public void EditorOnlyFunction() { }
7. #endif
8. }

This will remove the error.

Code (csharp):

1. public class SomeClass : Monobehaviour
2. {
3.     public float SerializedField; // Still gets serialized on device. Serialization is the same for device and editor. No error.
4.  
5. #if UNITY_EDITOR
6.     public void EditorOnlyFunction() { }
7. #endif
8. }

 

Thanks for your answer. I'll try this solution.

This error keeps popping up but unfortunately it doesn't say which script is the culprit: script unknown or not yet loaded.

Is there a way to get more information. Our game was initially made for XBOX one so we do have some #if UNITY_XBOXONE in our scripts that might cause this. Unfortunately those are not as easy to circumvent and I want to be sure before I start refactoring.

 

Thanks for your help Tautvydas!

I went and checked the code and removed all the #if UNITY_EDITOR guards around fields. The ones that I have left are inside or around methods. However I still get 2 errors. The first one is "The referenced script on this Behavior is missing" and the second one is the serialization layout but this time without the name of the affected script (script unknown or not yet loaded).

I've managed to track when the errors start to pop. Basically we have a splash screen scene, followed by a login scene.
Each scene has a manager singleton with Don't Destroy on Load. Inside that singleton there is a reference to an asset inside one of the asset bundles.

The splash screen loads all the asset bundles and then switches to the login screen. The moment we switch to the login screen all the errors start to pop up.

I know that this is really specific to our project and the way our asset bundles are set up so if you need any more information let me know.

 

Here are the errors I'm getting. And no, it's not fatal, I can keep running and navigate the menus. It would even load the assets but because of the missing scripts the game won't play as it should.

The weird thing for me is that the errors in which a prefab is mentioned don't have any scripts that have #if UNITY_EDITOR guards.

 

I'm not getting any errors while building the UWP project (from inside the unity editor) or when launching the app (from the generated .sln). Here's the editor log.

 

I get the error in even with "C# projects" and "Development Build" disabled. I've tried with Debug, Release and Master but it's not working. Unfortunately I'm not able to isolate and reproduce the problem in an empty project, so I'll have to send the entire thing if that's ok.

 

I've submitted the bug report, the number is 804163.

 

Thanks for the tip! We don't have any plugins that require .NET Core 5 functionality so IL2CPP backend should be fine. I'll try it on Monday and report back.

 

Wrong thread indeed Thanks for your help on the issue. For now I have removed the asset bundles as we were only using them to improve loading times on Xbox one, which won't be needed for UWP.