With the new patch I can't save a new head position to be used by TrackIR. Previously I could pause TrackIR, move my head to where I wanted, press F10 and see head position saved message, turn TrackIR back on, press key to center TrackIR and it would go the saved position.
Since the new patch when I press center the head position always reverts back to the default position.
EDIT: sorry didn't see the other posts with the same issue. My problem was in the F4U-1A.