all compilers have to be fixed befor entering game mode ..

I saw other posts about this same problem but doesnt seem to apply on mine , i havent deleted any scripts or anything it just tell me 3 erros which i know i have to fix but i dont know how i went to the script and i dont an expert so couldent find any errorr , this is what the errors says :
*Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,6): error CS1503: Argument #1' cannot convert object’ expression to type System.Type' *Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,6): error CS1502: The best overloaded method match for UnityEditor.CustomEditor.CustomEditor(System.Type)’ has some invalid arguments
*Assets/Editor/ImageEffects/CreaseShadingEditor.cs(8,26): error CS0122: `UnityStandardAssets.ImageEffects.CreaseShading’ is inaccessible due to its protection level

when i press on them ( take me to the error ) it shows this script on all of the erros ( doesnt seem to marker any line).

SCRIPT : namespace UnityStandardAssets.ImageEffects
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; } }

    void OnEnable () {
        serObj = new SerializedObject (target);

        m_intensity = serObj.FindProperty("intensity");
        m_softness = serObj.FindProperty("softness");
        m_spread = serObj.FindProperty("spread");


        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")); = softnessWarningValue;
        if (EditorGUILayout.BeginFadeGroup(m_showSoftnessWarning.faded))
            EditorGUILayout.HelpBox("High Softness value might reduce performance.", MessageType.Warning, false);

        EditorGUILayout.Slider(m_spread, 0.0f, 50.0f, new GUIContent("Spread")); = spreadWarningValue;
        if (EditorGUILayout.BeginFadeGroup(m_showSpreadWarning.faded))
            EditorGUILayout.HelpBox("High Spread value might introduce visual artifacts.", MessageType.Warning, false);

        serObj.ApplyModifiedProperties ();


It worked but when i opened a new folder and addes a c# script ( the script is empty i just added it ) the error is appearing AGAIN and same ERROR exactly ( same line in the older script ) .
i realy need help , does anyone here knows whats the problem ?

Sorry Bro! I have the same problem and if a put typeof(CreaseShadingEditor)) the error disappear but the camera doesn’t work

i figured out how to fix it , if u want to know how i did it attleast , i jsut deleted the script it told me there is problem in ( the script look kinda useless to me anyways . it was in editor something forgot ) and thats all , no problems at all , i have saved the script incase in the future ill need it but fornow everything working fine,