Hi, I have followed the tutorial to install Openni2, NITE, and sensor for kinect, but my Xtion pro live is not detected! When I launch NiViewer with Kinect there are no problem, but when I launch with xtion pro live there are a message " Device: PrimeSense/SensorKinect/5.1.2.1: The device is not connected! " . How to install the sensor xtion pro live on ubuntu 12.04?