AMX CAFE DUET V1.8 Instruction Manual page 12

Introduction
FIG. 4 Café Duet Setup License Registration screen
Should the license key not match, an on-screen dialog (FIG. 5) informs you that
the serial number given is either invalid or already in use on another machine.
If you believe that you have received this message in error, use the dialog's
information to contact AMX for further assistance.
FIG. 5 Café Duet Serial Number Registration Error screen
13.
Once the license registration process has successfully completed, the registration
dialog (FIG. 6) is then displayed with the information entered into the previous two
dialogs, including the entered Name, e-mail, Serial Number, and License Key
retrieved from AMX.
Keep this information available (for possible future support use).
14.
Click the Next button to complete the installation.
If there is a failure during the registration process, contact AMX Technical
Support for assistance.
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Café Duet v1.8 - User's Guide