MissingScriptChecker

using UnityEditor;
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Linq;


[InitializeOnLoad]
class MissingScriptChecker : Editor
{

    [MenuItem("GameObject/Missing Script Checker")]
    static void MissingScriptCheckerFunction()
    {
        StartCheck();
    }


    static MissingScriptChecker()
    {
        if (EditorApplication.isPlaying || Application.isPlaying)
            return;
        StartCheck();
    }


    static void StartCheck()
    {
        Debug.Log("Run MissingScriptChecker");

        List<GameObject> brokenList =
            // 全てのゲームオブジェクトを見つける
                    Resources.FindObjectsOfTypeAll(typeof(GameObject))
                    .Cast <GameObject>()
            // 各々のオブジェクトをチェック
                    .Where(
            // 全てのコンポーネントを取得
                        c => c.GetComponents<Component>()
                            // null を戻すものごあるか確認
                        .Any(o => o == null)
                    )
                    .ToList();

        foreach (GameObject gobj in brokenList)
            Debug.LogError(gobj.name, gobj);
    }
}