Hello Mark, Based on your description and the additional problems you are experiencing, I suspect that the cause might be something as simple as an old version of the X120 firmware. Please e-mail us at support@tobii.com to get the download details for the latest firmware version. Joakim

sacampus:Hi I have an application I have written with the SDK, but whenever I have this application running, Tobii Studio can't connect to the tracker (T60). I need to use my application to conduct a test, but I also need Tobii Studio to record the test for analysis later on. How can I have both running at the same time?What firmware version ...