Hi Bernie,
My first suggestion would be to make sure you're running the latest version 3.1. Please follow the steps below to get your update, which will only install on the machine where you already have your purchased license installed.
To have the download link automatically sent to you, please visit the Update/Upgrade assistant page at
www.notation.com/UpgradeOrder.php
1. Enter your email address and click "Enter",
2. At Step 2, click to select the license you want to update and click "Enter" to continue.
3. At the Step 3, click to check the box beside the "This license of..." entry. A "Send link" button will appear.
4. Click the "Send Link" button, and you will receive an email with your download link in it.
If you're still seeing the problem after updating Composer, please let me know at the Helpdesk (support@notation.com) and we'll get you going.
ttfn,
Sherry