Skinning Editor Copy Paste Error

Hi!

I want to copy bones to other PSB. But I encountered the following error.
These PSBs are mostly same, but some are different.
ex) file 2(to paste) has more element than file 1(to copy).

When I looked it up, people said that I had to upgrade the version, but I want to know if there is another solution.(I use 2019.4.21f)

Thank for Helping!

Code (CSharp):

1. ArgumentException: An item with the same key has already been added. Key: Head
2. System.Collections.Generic.Dictionary`2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) (at <eae584ce26bc40229c1b1aa476bfa589>:0)
3. System.Collections.Generic.Dictionary`2[TKey,TValue].Add (TKey key, TValue value) (at <eae584ce26bc40229c1b1aa476bfa589>:0)
4. UnityEditor.U2D.Animation.CopyTool+NewBonesStore.MapAllExistingBones () (at Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/CopyTool.cs:44)
5. UnityEditor.U2D.Animation.CopyTool.OnPasteActivated (System.Boolean bone, System.Boolean mesh, System.Boolean flipX, System.Boolean flipY) (at Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/CopyTool.cs:328)
6. UnityEditor.U2D.Animation.CopyToolView.OnPasteActivated (System.Boolean bone, System.Boolean mesh, System.Boolean flipX, System.Boolean flipY) (at Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/CopyTool.cs:658)
7. UnityEditor.U2D.Animation.PastePanel.OnPasteActivated () (at Library/PackageCache/com.unity.2d.animation@3.2.6/Editor/SkinningModule/UI/PastePanel.cs:66)
8. UnityEngine.UIElements.Clickable.Invoke (UnityEngine.UIElements.EventBase evt) (at <a30d64cf198846a786f143decb66f563>:0)
9. UnityEngine.UIElements.Clickable.OnMouseUp (UnityEngine.UIElements.MouseUpEvent evt) (at <a30d64cf198846a786f143decb66f563>:0)
10. UnityEngine.UIElements.EventCallbackFunctor`1[TEventType].Invoke (UnityEngine.UIElements.EventBase evt) (at <a30d64cf198846a786f143decb66f563>:0)
11. UnityEngine.UIElements.EventCallbackRegistry.InvokeCallbacks (UnityEngine.UIElements.EventBase evt) (at <a30d64cf198846a786f143decb66f563>:0)
12. UnityEngine.UIElements.CallbackEventHandler.HandleEvent (UnityEngine.UIElements.EventBase evt) (at <a30d64cf198846a786f143decb66f563>:0)
13. UnityEngine.UIElements.CallbackEventHandler.HandleEventAtTargetPhase (UnityEngine.UIElements.EventBase evt) (at <a30d64cf198846a786f143decb66f563>:0)
14. UnityEngine.UIElements.MouseCaptureDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <a30d64cf198846a786f143decb66f563>:0)
15. UnityEngine.UIElements.EventDispatcher.ApplyDispatchingStrategies (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, System.Boolean imguiEventIsInitiallyUsed) (at <a30d64cf198846a786f143decb66f563>:0)
16. UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <a30d64cf198846a786f143decb66f563>:0)
17. UnityEngine.UIElements.EventDispatcher.ProcessEventQueue () (at <a30d64cf198846a786f143decb66f563>:0)
18. UnityEngine.UIElements.EventDispatcher.OpenGate () (at <a30d64cf198846a786f143decb66f563>:0)
19. UnityEngine.UIElements.EventDispatcherGate.Dispose () (at <a30d64cf198846a786f143decb66f563>:0)
20. UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <a30d64cf198846a786f143decb66f563>:0)
21. UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at <a30d64cf198846a786f143decb66f563>:0)
22. UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at <a30d64cf198846a786f143decb66f563>:0)
23. UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <a30d64cf198846a786f143decb66f563>:0)
24. UnityEngine.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <a30d64cf198846a786f143decb66f563>:0)
25. UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <07cfa953d94b44e4bb3a488bef79100a>:0)

 

Hey,

I actually ran into this issue the other day and submitted a bug report. Apparently, Unity was already aware of the issue.

Issue link: https://issuetracker.unity3d.com/is...eption-error-is-thrown-when-pasting-bone-data

Unfortunately, I never found a solution. It seems like the individual PSB files are bugged, so creating bones in new files and then copying those bones to other new files should still work.

I was using a version of 2020.3 at the time, so I doubt upgrading will do anything.