EditorStartup.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEngine.Assertions;
using UnityEditor;

[InitializeOnLoad]
class EditorStartup
{
	static EditorStartup ()
	{
		CopyDBs ();
	}

	static void CopyDBs()
	{		
		string editorPath = Application.persistentDataPath + "/Editor" ; // HARDCODE
//		var debugString = string.Format ("EditorUtil.CopyDBs: editorPath={0}", editorPath);
//		Debug.Log (debugString);

		FileUtil.DeleteFileOrDirectory (editorPath);
		Directory.CreateDirectory (editorPath);
		string rosettaName = "RosettaStone";
		string masterName = "MasterData";
		string dynamicName = "DynamicDB";
		string rosettaPath = Application.persistentDataPath + "/" + rosettaName + ".bytes";
		string masterPath = Application.persistentDataPath + "/" + masterName + ".bytes";
		string dynamicPath = Application.persistentDataPath + "/" + dynamicName + ".bytes";

		Assert.IsTrue (File.Exists (rosettaPath));
		Assert.IsTrue (File.Exists (masterPath));
		Assert.IsTrue (File.Exists (dynamicPath));
		File.Copy (rosettaPath, editorPath + "/" + rosettaName + "_E.bytes");
		File.Copy (masterPath, editorPath + "/" + masterName + "_E.bytes");	
		File.Copy (dynamicPath, editorPath + "/" + dynamicName + "_E.bytes");
	}
}