• Cannot delete access key from console. It is not the
PRODUCT ID used for getting access key. Check
PRODUCT ID and retry de-authorization.
→ Make sure that the same PRODUCT ID was used to
obtain the access key, then try to de-authorize again.
Errors in connection to the authentication
• Unable to connect to the authentication server.
→ Make sure that the computer is connected to the Internet.
The authentication server may be very busy now. Try to
connect to the server later.
• Access key cannot be issued because the PRODUCT ID
• Access key cannot be issued because registration code
→ Make sure that the PRODUCT ID or the registration
code is correct, then try to install the software again.
• New access key cannot be issued because this
PRODUCT ID has already issued access key.
→ The license for this PRODUCT ID has already been used
on a different console. If you wish to install the software
in another console, you must de-authorize the software
license on the current console.
• Unable to de-authorize because unregistration code
is not in agreement with the information when access
key was issued.
• Cannot de-authorize as unregistration code is
→ Make sure that the unregistration code is correct, then try
to de-authorize the software again.
• De-authorization is not required as access key has
not been issued for this PRODUCT ID.
→ Check the PRODUCT ID that was used to install the
software, then try to de-authorize the software again.
Error Messages on the Console
The following message is displayed if the console's system
software has not been installed completely (except for the
• "Protocol Error"
• "Vendor Error"
→ This message appears when the installer is checking the
Flash Update version. This is not a malfunction.
• "Please grant authority"
→ The access key for the system software has not been
written. Completing the installation of the system
software will enable you to install the Add-On Effects
Q: The computer does not communicate with
A: The installer does not function with any driver other
than the Yamaha USB-MIDI Driver. You must first
install the Yamaha USB-MIDI Driver. Then, when the
console screen indicates FLASH UPDATE, use a USB
cable to connect the console to your computer.
A: Mac OS 9 users must install and set up OMS. Also, make
sure that you have specified the correct ports.
A: If there is no problem with the settings described above,
turn off and on the power to the console.
Q: The computer cannot access the
A: Make sure that the computer is connected to the
A: URL Access that comes with Mac OS 9.0 may not work
in some cases. Update URL Access by downloading it
from the Apple Computer website.
A: Windows users must select in Internet Explorer [Tools
→ Internet Options... → Advanced], then select one or
more of "Use SSL 2.0," "Use SSL 3.0," and "Use TSL
1.0." (One or more have already been selected as the
Q: The access key, registration code,
unregistration code, or PRODUCT ID is
A: The code is different for each console and each software
package. Make sure that you are entering the correct
code for the correct console and correct package.
Q: You lost the access key.
A: You can obtain the access key again. Check the
PRODUCT ID printed on the label on the CD-ROM
case, then try to install the software again.
Q: You wish to install the software in a
A: You can de-authorize the license of the installed Add-On
Effects, then install it on another console.
Q: You are unable to acquire an access key
from the authentication server even after
checking your system and following the
steps described in the Error Message list
and Troubleshooting section.
A: Contact Yamaha at the following e-mail address. Please
send the e-mail in English.
Add-On Effects Installation Guide