We have installed Nefsis on a number of PC's but there is a recurring error that occurs more than it should. After opening Nefsis and Entering My Meeting Room when the user clicks on Enable All Video there is an error message after a short while indicating that the video is in use with another application. This occurs after a reboot with nothing else started, but not every time. Has anyone seen this before and does anyone have any suggestions? All camera's are Logitech 9000. Also we have reinstalled Nefsis but this hasn't cleared the issue.