fbx/vrmからExportするとVRMファイルは生成されるがエラーが出る

[shiena]

バグについて

fbx/vrmからExportするとVRMファイルは生成されるがエラーが出る。

再現方法

1. Kyleをインポートする
2. Kyleのアニメーションタイプをヒューマノイドに変更する
3. プロジェクトタブからRobot Kyle.fbxを選択する
4. メニューのVRM > UniVRM-0.54.0 > Export humanoidを選択する
5. Authorに適当に入力する
6. Exportボタンを押す

vrmファイルでも同様の手順でエラーが出ます。

エラーログ

ArgumentException: Calling apply or revert methods on an object which is not part of a Prefab instance is not supported.
Parameter name: prefabInstanceObject
UnityEditor.PrefabUtility.ThrowExceptionIfNotValidPrefabInstanceObject (UnityEngine.Object prefabInstanceObject, System.Boolean isApply) (at C:/buildslave/unity/build/Editor/Mono/Prefabs/PrefabUtility.cs:292)
UnityEditor.PrefabUtility.RevertPrefabInstance (UnityEngine.GameObject instanceRoot, UnityEditor.InteractionMode action) (at C:/buildslave/unity/build/Editor/Mono/Prefabs/PrefabUtility.cs:307)
VRM.VRMExportSettings.Export (System.String path, System.Collections.Generic.List`1[T] destroy) (at Assets/VRM/UniVRM/Scripts/Format/VRMExportSettings.cs:396)
VRM.VRMExportSettings.Export (System.String path) (at Assets/VRM/UniVRM/Scripts/Format/VRMExportSettings.cs:258)
VRM.VRMExporterWizard.OnWizardCreate () (at Assets/VRM/UniVRM/Editor/Format/VRMExporterMenu.cs:42)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <567df3e0919241ba98db88bec4c6696f>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <567df3e0919241ba98db88bec4c6696f>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <567df3e0919241ba98db88bec4c6696f>:0)
UnityEditor.ScriptableWizard.OnGUI () (at C:/buildslave/unity/build/Editor/Mono/ScriptableWizard.cs:79)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <567df3e0919241ba98db88bec4c6696f>:0)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at <567df3e0919241ba98db88bec4c6696f>:0)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at <567df3e0919241ba98db88bec4c6696f>:0)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:359)
UnityEditor.HostView.Invoke (System.String methodName) (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:353)
UnityEditor.HostView.OldOnGUI () (at C:/buildslave/unity/build/Editor/Mono/HostView.cs:138)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:298)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:483)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:466)
UnityEngine.UIElements.IMGUIContainer.HandleEvent (UnityEngine.UIElements.EventBase evt) (at C:/buildslave/unity/build/Modules/UIElements/IMGUIContainer.cs:447)
UnityEngine.UIElements.MouseCaptureDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/Events/MouseCaptureDispatchingStrategy.cs:93)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/EventDispatcher.cs:280)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/Modules/UIElements/EventDispatcher.cs:156)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at C:/buildslave/unity/build/Modules/UIElements/Panel.cs:190)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:255)
UnityEngine.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/UIElements/UIElementsUtility.cs:78)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)

期待する動作

エラーが出ないこと

スクリーンショット

環境情報

• OS: Windows 10
• UniVRM version: 0.54.0
• Unity2019.3.0f3 / Unity2019.2.16f1

追加の状況・背景

ヒエラルキーに配置した3Dモデルを選択してエクスポートした場合はエラーは起きません。
また、Unity2017.4.28f1ではfbxを選択してエクスポートしてもエラーは起きません。

[hiroj]

こちらのissueは #349 と同じ問題でしょうか？

[hiroj]

再現しました、[Project]にあるFbxのPrefabを直接選択した状態でExport humanoidを行うとPrefabの状態をもとに戻す処理でエラーが出ているようです。
お手数ですがエラーが出る場合は、FbxのPrefabをいったん[Hierarchy]に配置したものを選択した状態で[Export humanoid]してください。
次回のバージョンで修正を検討致します。

[hiroj]

https://github.com/vrm-c/UniVRM/releases/tag/v0.55.0
Robot Kyle.fbxで検証してエラーが出ないように修正が入りました。

[shiena]

fbxからExport humanoidを行ってエラーが出なくなりました。ご対応ありがとうございました。