First, check battery voltage. Use the driver station voltage meter, or if you can't get that online for whatever reason, use a voltmeter between battery and Voltage Regulator Module. Then, check the roboRIO's power supply.
Second, check connection - if you can't do wireless, make sure you have a good ethernet cord attached. Try with several if you have them, or check it with another method.
Third, check all OTHER wiring.
Fourth, ask someone who's not trying to get answers out of the team electrician and programmer. (I'm the CAD guy/mechanical/safety captain/various others that aren't electrician or programming)
Good luck,
Team 4368 Bullbots
EDIT: Check your roboRIO firmware, you may actually need to update it.