Hello im a big noob with blender, ive currently been making a youtube intro when i render it in camera perspective i can see it fine but when i render it as as a animation (individual PNG) all images are black, ive tried every diffrent setting but obviously im not doing something right, i am using cycles render because im doing lots of particles. if anyone can help me that would be great
blend file is here -

http://www.pasteall.org/blend/19142

Password for file is beepat

cheers!