Are you getting any movement at all of the little circles during calibration in Freerider?
You could try disconnecting the wireless mouse just to see if that makes a difference, I don't think that's the problem though.
The tip to uninstall vJoy and/or Smartpropoplus has helped a lot of people. I know, you probably already saw that in the manual but it's worth repeating just in case you or anybody else reading this has missed it.