Script is disabled when the scene starts - C # Unity2d

I have been trying to solve the error for hours, I have a script which I use to pass information between scenes, like the character I selected in the character selection scene that I have created. All this works, but the script is disabled when entering the scene, and I have to activate it manually every time I enter the game, which I can not do from a mobile device.

Here the script:

using UnityEngine;
using System.Collections;
using System;
using System.Runtime.Serialization.Formatters.Binary;
using System.IO;

public class conservar : MonoBehaviour
{
    public static conservar estado;
    private string rutaArchivo;
    public int per = 0;
    public int puntuacionMaxima = 0;
    public int lastpunt = 0;
    public Meters M;
    public int Mtrs = 0;

    void Awake()
    {
        GameObject CharSel = GameObject.Find("/personaje/CHarSel");
        CharSel.GetComponent<CharSel>();
        GameObject DispChar = GameObject.Find("/DispChar");
        DispChar.GetComponent<DispChar>();

        rutaArchivo = Application.persistentDataPath + "/datos.dat";

        if (estado==null)
        {
            estado = this;
            DontDestroyOnLoad(gameObject);
        }
        else if (estado != this)
        {
           Destroy(gameObject);
        }
    }
    // Use this for initialization
    void Start()
    {
        Cargar();
    }
    // Update is called once per frame
    void Update()
    {
        per = DispChar.perso;

        if (per == 0)
        {
            CharSel.Character = 0;
        }
        if (per == 1)
        {
            CharSel.Character = 1;
        }
        if (per == 2)
        {
            CharSel.Character = 2;
        }
        if (per == 3)
        {
            CharSel.Character = 3;
        }
        lastpunt = M.meters;
    }
    public void Guardar()
    {
        BinaryFormatter bf = new BinaryFormatter();
        FileStream file = File.Create(rutaArchivo);

        DatosAGuardar datos = new DatosAGuardar();
        datos.puntuacionMaxima = puntuacionMaxima;

        bf.Serialize(file, datos);

        file.Close();
    }
    void Cargar()
    {
        if (File.Exists(rutaArchivo))
        {
            BinaryFormatter bf = new BinaryFormatter();
            FileStream file = File.Open(rutaArchivo, FileMode.Open);

            DatosAGuardar datos = (DatosAGuardar)bf.Deserialize(file);
            puntuacionMaxima = datos.puntuacionMaxima;

            file.Close();
        }
        else
        {
            puntuacionMaxima = 0;
        }
    }
    [Serializable]
    class DatosAGuardar
    {
        public int puntuacionMaxima;
    }
}