I also have a problem with opentrack with DCS. It was working fine and the opentracker still tracks my head movements but DCS is not recognizing it anymore. Also in the DCS controls I used to see headtracker in the top tab and it was all in the correct axis for tracking but now it has disappeared. I've tried reinstalling and running in administrator.> nothing changed since it ws working. I was using DCS and I closed opentrack, and when I opened it again it wasn't working. It's all I have to fly DCS. Please help!