Using Exploder Script

Hi all, I have just tried to explode a car but the resolts look very unrealistic. First of all after setting the parameter and rendering, the explosion is not a red firery ball but black. How can I rectify this. Attached below is link to the animation:

http://s281.photobucket.com/albums/kk216/Eiseprod/?action=view&current=CarExplosion10001_0029.flv