It was working fine, and then I added an extension cord to the USB camera and it stopped. I removed the extension, and it does not work. Chat app sees the camera fine, not iCamsource. What happened? I've reinstalled iCamsource, searched for drivers for the camera (Logitech, no drivers needed), removed all hubs and extra cords, no picture in iCamsource. Preferences list the camera, but no video.