Apple Remote Desktop 3: Repeated serial number requests, or "Your task server could not be contacted" message

The first time you open the Remote Desktop 3.0 admin application, you should be logged in as an admin user. If not, you will see one of these two symptoms every time you launch the application:

• a request to enter your product serial number
• this message: "Your task server, ' ', could not be contacted."

To resolve the issue, log in as an admin user, open Remote Desktop, complete the setup steps, and quit.