Error on startup after creating a OdinEditorWindow subclass

[Zoee Silcock]

What happened

Multiple errors show up after starting Unity. I haven't seen any ill effects from these errors but they should obviously not be happening. This is what the stack trace looks like:

Recursive Serialization is not supported. You can't dereference a PPtr while loading. (Constructors of C# classes may not load objects either. See stacktrace.)
Microsoft.Win32.Win32RegistryApi:GetValue(RegistryKey, String, Object, RegistryValueOptions)
Microsoft.Win32.RegistryKey:GetValue(String, Object)
Microsoft.Win32.RegistryKey:GetValue(String)
System.DateTime:get_Now()
Sirenix.Serialization.PrefabModificationCache:CachePrefabModifications(Object, List`1) (at X:/Repositories/sirenix-development-framework/OdinSerializer/OdinSerializer/Unity Integration/UnitySerializationUtility.cs:2337)
Sirenix.Serialization.UnitySerializationUtility:ApplyPrefabModifications(Object, List`1, List`1) (at X:/Repositories/sirenix-development-framework/OdinSerializer/OdinSerializer/Unity Integration/UnitySerializationUtility.cs:2076)
Sirenix.Serialization.UnitySerializationUtility:DeserializeUnityObject(Object, SerializationData&, DeserializationContext, Boolean, List`1) (at X:/Repositories/sirenix-development-framework/OdinSerializer/OdinSerializer/Unity Integration/UnitySerializationUtility.cs:1436)
Sirenix.Serialization.UnitySerializationUtility:DeserializeUnityObject(Object, SerializationData&, DeserializationContext) (at X:/Repositories/sirenix-development-framework/OdinSerializer/OdinSerializer/Unity Integration/UnitySerializationUtility.cs:1147)
Sirenix.OdinInspector.Editor.OdinEditorWindow:UnityEngine.ISerializationCallbackReceiver.OnAfterDeserialize()
UnityEditorInternal.InternalEditorUtility:LoadSerializedFileAndForget()
UnityEditor.WindowLayout:LoadWindowLayout(String, Boolean)

How to reproduce it

Simply creating a subclass of OdinEditorWindow seems to be enough to reproduce it. Example project included has a very small OdinEditorWindow that reproduces the issue.

Steps to reproduce with example project

• Open reproduction project.
• Open the Sample Scene (it's empty, but the errors don't occur when starting Unity with a new scene).
• Add Odin Inspector.
• Enable Editor Only mode.
• Open the custom window (Custom -> Custom window).
• Close Unity.
• Re-open Unity and the errors should show in the console.

Version details

• Unity Version: 2018.3.0f2
• Odin Version: 2.0.15
• Editor Only Mode: Yes
• OS: Windows 10 Version 10.0.17763 Build 17763

[Zoee Silcock]

This issue persists despite updating OS, Unity and Odin. Here are the versions I am running now:

• Unity Version: 2018.4.0f1
• Odin Version: 2.0.20.0
• Editor Only Mode: Yes
• OS: Windows 10 Version 10.0.17763 Build 17763.503

[Zoee Silcock]

This issue resolved itself when I updated from version 2.1.0 to version 2.1.4. Not clear from the Patch Notes what actually fixed it.