Loading screen on 5.3 (problem after loading the first scene)

So, I got a problem with my scene loader...

I can go from scene 1 to 0, or 0 to 1...but if I try to go from 0 to 1 and then go back to 0 it doesnt load(0 to 1 to 2 doesnt work eighter).

I made it based on t$$anonymous$$s video: https://www.youtube.com/watch?v=oNf3gdjiEEQ

here is the code: http://pastebin.com/zp5ryD5r I

have few logs set, I only get response from "checkpoint 0".

I also tried to pass the index value directly from the script:

 public void Load_MainMenu()
 {
 sceneLoader.LoadLevel(0);
 }

and t$$anonymous$$s is the function I'm using to pass the value to the sceneloader:

 public void Load_Level(int scene_id)
 {
 Debug.Log(scene_id);
 sceneLoader.LoadLevel(scene_id);
 }

Tried to make the scene loader a permanent object that doesnt get destroyed on load as well as a object that is generated on every scene and a object that is present on every scene.

any ideas?