Mecanum Trouble

[Cecil]

Hold on a second, I think I know what's going on. On the "Open 4 Motor.vi", there are actually 4 terminals to invert motors. It looks like you have both of the bottom ones set to true and the top two unwired (which defaults to false). This would mean that Both your front left and front right motors are inverted, but not the other ones. Your inversions should match on sides, not front to back. I have attached a photo that should explain it a bit better.

Try going back to the default code (run the wires directly from the joystick axes to the holonomic vi) and see if inverting the correct motors fixes everything for you. If you push the joystick forward, and the robot moves backwards, switch the inversions to the right side instead.