I have been using a windows 10 machine but every time I go into hardware setting and set up the timer and port then run start test I am not able to close the hardware setting screen and have to go into task manager to close it. Than I am not sure if the setting are correct or not. I also have tried to set up a d-line score with no success. It is getting pretty frustrating to spend the amount of hours trying to get this to work and not having much luck. I have sent email to Nastar asking for help with no response. If were had snow we could not run a Nastar race with the current software.