[Alan Anderson]

If you are using the unmodified Arcade Drive in the default project, there's nothing wrong with your joystick axes. What needs to be fixed is the direction your motors are turning. Specifically, your left motor is going the way opposite the way the code expects it to.

You can fix that either by switching the actual wires coming from the speed controller to the motor, or by changing the "LeftMotorInverted" constant on the 2 Motor Open from True to False in the Begin vi.