Gift certificate: ERROR_GV_CREATE_ACCOUNT

When sending a gift certificate by email from admin, it gives this error when the user clicks on the link to redeem:

Error ERROR_GV_CREATE_ACCOUNT

This appears above the register account and login to existing account prompts.

When proceeding to login to existing account, it works and says:



Redeem Gift Certificate
Congratulations, you have redeemed a Gift Certificate worth $USD1.00.
For more information regarding Gift Certificate, please see our Gift Certificate FAQ.
Continue to My Account

The supplied gift certificate code in the email also does work. Please advise about the ERROR_GV_CREATE_ACCOUNT. Thank you.

Best regards,

1.5.5 is quite old; this issue might have been fixed in the nine years since its initial release. Your best bet would be to install a copy of the latest Zen Cart in a test folder and try this operation again to see if there's still an issue.