compiler error - playmode

Hallo,

ich bin neu in der Unity-Umgebung und habe mir ein Free-Asset runtergeladen. Danach hat er die API geupdatet und nun geht nichts mehr: "All compiler Errors have to be fixed before you can enter playmode"

3 Fehler:

(1) Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,26): error CS0122: UnityStandardAssets.ImageEffects.CreaseShading' is inaccessible due to its protection level`

(2) Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,6): error CS1502: The best overloaded method match for UnityEditor.CustomEditor.CustomEditor(System.Type)' has some invalid arguments`

(3) Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,6): error CS1503: Argument #1' cannot convert object' expression to type System.Type'`

der code im creaseshadingeditor ist folgender:

 using System;
 using UnityEditor;
 using UnityEditor.AnimatedValues;
 using UnityEngine;
 
 namespace UnityStandardAssets.ImageEffects
 {
     [CustomEditor(typeof(CreaseShading))]
     class CreaseShadingEditor : Editor {
         SerializedObject serObj;
 
         SerializedProperty m_intensity;
         SerializedProperty m_softness;
         SerializedProperty m_spread;
 
         AnimBool m_showSoftnessWarning = new AnimBool();
         AnimBool m_showSpreadWarning = new AnimBool();
 
         private bool softnessWarningValue { get { return m_softness.intValue > 4; } }
         private bool spreadWarningValue { get { return m_spread.floatValue > 4; } }
 
         public void OnEnable () {
             serObj = new SerializedObject (target);
 
             m_intensity = serObj.FindProperty("intensity");
             m_softness = serObj.FindProperty("softness");
             m_spread = serObj.FindProperty("spread");
 
             m_showSoftnessWarning.valueChanged.AddListener(Repaint);
             m_showSpreadWarning.valueChanged.AddListener(Repaint);
 
             m_showSoftnessWarning.value = softnessWarningValue;
             m_showSpreadWarning.value = spreadWarningValue;
         }
 
         public override void OnInspectorGUI () {
             serObj.Update ();
 
             EditorGUILayout.Slider(m_intensity, -5.0f, 5.0f, new GUIContent("Intensity"));
 
             EditorGUILayout.IntSlider(m_softness, 0, 15, new GUIContent("Softness"));
             m_showSoftnessWarning.target = softnessWarningValue;
             if (EditorGUILayout.BeginFadeGroup(m_showSoftnessWarning.faded))
             {
                 EditorGUILayout.HelpBox("High Softness value might reduce performance.", MessageType.Warning, false);
             }
             EditorGUILayout.EndFadeGroup();
 
             EditorGUILayout.Slider(m_spread, 0.0f, 50.0f, new GUIContent("Spread"));
             m_showSpreadWarning.target = spreadWarningValue;
             if (EditorGUILayout.BeginFadeGroup(m_showSpreadWarning.faded))
             {
                 EditorGUILayout.HelpBox("High Spread value might introduce visual artifacts.", MessageType.Warning, false);
             }
             EditorGUILayout.EndFadeGroup();
 
             serObj.ApplyModifiedProperties ();
         }
     }
 }
 

Bin dankbar für jede hilfe. LG