Technical Support

Welcome to Alfred Music's Tech Support Page. This is where you will find answers to our most frequently asked questions. Click on your specific product name from the listing below. If you can't find the answer to your questions, please contact us at When emailing, please include the full product title and be as specific as possible when referencing the problem. We will need to know what operating system you are using (Windows 7, Vista, XP, OS X, etc). If you are receiving an error message, please tell us exactly what it says. You may also contact us at:

Alfred Music Co.
Attn: Tech Support
P.O. Box 10003
Van Nuys, CA 91410-0003
(818) 892-2452
Monday - Friday
8:00am - 4:00pm PST
(818) 830-6252
If you have questions about our non software products, please click here.
"Macromedia Projector has stopped working" (Vista, Windows 7 compatibility):
If you are receiving this common error message, please follow the instructions below to run your computer in compatibility mode:
Right-click on the file you use to open the program > Select Properties from the menu > In the dialog that appears, choose the Compatibility tab > Check “Run this program in compatibility mode for:” and select Windows 98 from the drop-down list > Click the OK button
After making these changes, the program should open. If you do not see a Compatibility tab in the Properties window, you may need to click the Advanced button first.
Mastering Music:
For all technical support inquiries regarding Mastering Music, please contact the manufacturer, Datasonics, directly at