Grifball help

I’m having trouble with scoring the grifball. I have used the default grifball game and the default map for it, and its not working. I bring the ball to the capture plate and it doesn’t do anything. I’m trying to play Football(http://www.youtube.com/watch?v=VBqsLWRiRss), but his map doesn’t work either with his settings. Any help will be much appreciated.

You can’t score if there are no players on the enemy team. That’s the only thing I can think of.

Ohhhh that’s probably it. =P Thank you very much, have a good Wednesday!