[EricH]

The real reason why no teams could score in the blue goal during practice: it was rigged so they couldn't. Here we see the field crew fixing it after somebody "fixed" it. Who remains a mystery, though the FIRST Field Police suspect an inside job based on this photo.

In an unrelated note, nobody has yet been able to translate the message seen in the window. It is widely supposed that it contains the identity of the person responsible for the field scoring system for the 2006 game, and has been scrambled to protect his or her identity.