MeshBaker 3.31.0 issue

InvalidCastException: Specified cast is not valid.
DigitalOpus.MB.MBEditor.MB3_MeshBakerEditorInternal.DrawGUI (UnityEditor.SerializedObject meshBaker, MB3_MeshBakerCommon target, UnityEngine.Object[] targets, System.Type editorWindowType) (at Assets/MeshBaker/Editor/MB3_MeshBakerEditorInternal.cs:209)
DigitalOpus.MB.MBEditor.MB3_MeshBakerEditorInternal.OnInspectorGUI (UnityEditor.SerializedObject meshBaker, MB3_MeshBakerCommon target, UnityEngine.Object[] targets, System.Type editorWindowType) (at Assets/MeshBaker/Editor/MB3_MeshBakerEditorInternal.cs:151)
DigitalOpus.MB.MBEditor.MB3_MeshBakerEditor.OnInspectorGUI () (at Assets/MeshBaker/Editor/MB3_MeshBakerEditor.cs:99)
UnityEditor.InspectorWindow.DoOnInspectorGUI (System.Boolean rebuildOptimizedGUIBlock, UnityEditor.Editor editor, System.Boolean wasVisible, UnityEngine.Rect& contentRect) (at C:/buildslave/unity/build/Editor/Mono/Inspector/InspectorWindow.cs:1647)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at C:/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:179)