Unable to Copy files from one directory to another.

I’m using the following code to copy a folder and the subfolders within to another location:

    using UnityEngine;
    using UnityEngine.UI;
    using System.IO;

    public class MainScript : MonoBehaviour {
    public void Save () {
    		modFolder = System.Environment.GetFolderPath (System.Environment.SpecialFolder.MyDocuments) + "/Mods";
    		modFolder = modFolder.Replace(@"/", @"\");   
    		string dataL = "/Data";
    		dataL = dataL.Replace(@"/", @"\");
    		string path1 = directory + dataL;
    		string path2 = Application.streamingAssetsPath + dataL;
    		string[] directories = Directory.GetDirectories (modFolder + dataL);
    		string[] files = Directory.GetFiles(modFolder + dataL);
    		foreach (string folder in directories) {
    			string[] subfiles = System.IO.Directory.GetFiles(folder);
    			if (!Directory.Exists(folder))
    			foreach (string subfile in subfiles) {
    				string fileName = Path.GetFileName (subfile);
    				string destFile = @"\" + fileName;
    				string destFile2 = @"\" + fileName;
    				File.Copy (subfile, destFile, true);
    				File.Copy (subfile, destFile2, true);
    		foreach (string s in files) {
    			string fileName = Path.GetFileName (s);
    			string destFile = Path.Combine (path1, fileName);
    			string destFile2 = Path.Combine (path2, fileName);
    			if (!Directory.Exists(path1))
    			if (!Directory.Exists(path2))
    			File.Copy(s, destFile, true);
    			File.Copy(s, destFile2, true);

The problem is that when I press the save button, Unity gives me the error:
UnauthorizedAccessExeption: Access to path “C:\Users\Mike\Documents\Mods\Data\Test\Test.txt” or “\Test.txt” is denied.
System.IO.File.Copy (System.String sourceFileName, System.String destFileName, Boolean overwrite) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.IO/File.cs:124)

Have you tried launching Unity in administrator mode? If not try building your project and launching it on administrator mode.