EDIT: alright, I've found a fix to the issue with the database error when trying to install the product.
Go to your PHPMyAdmin, and execute the following command:
Code:
ALTER DATABASE yourdbname CHARACTER SET latin1 COLLATE latin1_swedish_ci;
That should change the database's character set you're currently using to latin1_swedish_ci (ISO-8859-1). It installed without any issue now. The only possible issue I could imagine happening would be names that are absolutely multi-byte - such as Japanese; I don't think that is used in WoW, though.
Thanks for the add-on, by the way! Very nice, and much appreciated. Installed.