発生バージョン: SpriteStudio 6.2.2.1186
SpriteStudio 6 Player for Unity 1.1.5
Unity 2017.3.1.p4
動作環境: Mac OSX HighSierra
症状:Unityにインポートする際に
SS6PU Error: Convert-Main (SS6PU): Material-Animation [MASK_PRE,MASK] could not be created...とエラーが出てインポートが失敗する。Unity2017.1.2 SS6Player1.0.26の組み合わせのときは正常に読むこむことができていました。
エラー表示はLog:Error(String, Boolean, Boolean) (at Assets/SpriteStudio6/Editor/LibraryEditor_SpriteStudio6.cs:1779)
Import:LogError(String, String) (at Assets/SpriteStudio6/Editor/LibraryEditor_SpriteStudio6.cs:999)
Import:ExecSS6PU(Setting&, Int32&, Int32, Boolean, Information, String) (at Assets/SpriteStudio6/Editor/LibraryEditor_SpriteStudio6.cs:364)
Import:Exec(Setting&, String, String, Boolean) (at Assets/SpriteStudio6/Editor/LibraryEditor_SpriteStudio6.cs:174)
MenuItem_SpriteStudio6_ImportProject:OnGUI() (at Assets/SpriteStudio6/Editor/Tools/Importer.cs:157)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
と続きます。