I used FacetrackNoIR with the Pointtracker plugin successfully through the alpha.
fakeTrackIR and Freetrack protocols worked fine. Now none of them seem to work.
Could you please allow us to use independent Head-tracking solutions?
Btw. has anyone got a working solution (besides TrackIR)?
I found this: http://www.youtube.com/watch?v=BU4JXI_MT5U
but sadly i don't understand a word.