[Mr. Freeman]

Try tethering the OI to the RC. We had a similar problem when trying to test 2 robots at the same time using 2 years' of hardware. When you tether the OI to the RC, the RC stores the OI's info so it knows which OI to look for when it powers up. If you change the settings on your OI (team number, channel), you have to re-tether the bot to 'link' the two back together.

Now, you say that you have green lights across the board and I think one of those is "radio link". Green would mean it's linked properly, so this might not be your problem.

The only other thing I can think of is that you blew out all of your victors. If either the supply power or the PWM cable is connected backwards ONCE and powered up, it WILL destroy the unit. (It took us 2 years of mysterious failures before we read the victor 884 manual and discovered this fact. We now have 5-8 dead victors in our supply closet)
We haven't managed to blow them all out at once. However if someone has recently rewired the robot they may have inserted all the PWM cables backwards. Perhaps someone reversed +12 and ground at one of the distribution terminals (I think that's what they're called, correct me if I'm wrong, I don't do very much of the wiring)?