Okay thank you!

Hello! I am trying to get doors working in my map i'm working on. I followed a tutorial made by Wakka (link here: http://www.youtube.com/watch?v=UNmicVDWzcw ) and after following all steps and doing it multiple times I still cannot get my doors to work. In game it says "Not Avaliable" and it doesn't give me an option to buy debris. If someone can help that would be great 

Is there any way I could change the Game Over music for the map I'm working on? I would really like to know!