Hello while UDP port binding is OK at any first starting of sofwtare -Facetrack working fully correctly-, a manual software "stop" then 'start' makes the binding not working anymore (Error / "please try another port"...) "as if" the port was not correctly closed . A change of UDP configuration port will work (once). But the problem will then be repeated with that new port. So nothing to do with the actual network configuration on the machine. Bug occurs anytime here with that operations. Can you...