I set up a machine that meets Microsoft's requirements (including using an approved USB 3.0 card instead of the USB 3.0 ports built into my motherboard), but when I try to use the 3D Scan app, all I get is a gray box where I should see the input from the Kinect camera. I've installed the Kinect Configuration Verifier tool, and I can see both the color and the depth images using that tool. But with 3D Scan, the Kinect doesn't turn on and I see nothing. Google searches turned up only a suggestion to stop and restart the Kinect Monitor service, but that didn't help me. Any other ideas?