If your data base has zen_ in front of it you need to edit catalog/mailhive/mailbeez/config.php line 154
From
PHP Code:
mh_db_query("CREATE TABLE IF NOT EXISTS mailbeez_tracking ( 
To
PHP Code:
mh_db_query("CREATE TABLE IF NOT EXISTS zen_mailbeez_tracking ( 
If you have already installed, remove MailHive - Basic Configuration in admin. then click to insall again.