[Alan Anderson]

I suspect that the fault is not in your roboRIO but in your motor wiring.

Try using tank drive to control the left side and right side motors independently. Make sure the correct motor goes in the direction you expect. If the wrong motor turns, correct the code in Begin.vi to tell it where the left and right motors are really connected. If the motor turns in the wrong direction, again correct the code in Begin.vi to invert it.

If you're absolutely certain that your motors are wired properly, show us your Begin and Teleop code so we can make sure you haven't done something that would cause what you are seeing.