Thanks for posting. Have you submitted a support ticket to our Tech Support department? I am sure they would be happy to take a look at what might be causing this issue on your computer. You can submit a ticket by following this link, http://smartmusic.custhelp.com/app/
These on-line forums are intended for the exchange of ideas among the users of MakeMusic products. If you'd like individual help from our technical support staff, please contact us directly at www.smartmusic.com/support.