If the tables are not installed normally that’s because either the MySQL user setup in you wp-config.php doesn’t have the rights to create tables.
Or that’s because you don’t have the rights to create folders within the wordpress folder : wp-content/uploads.
Anyway try the url I copied you above and if it’s not working, get in touch with us on our support website: http://support.wysija.com
Thanks for the speedy help. Your reset url did the trick. Tables installed and I am able to add new subscribers.
Just for info, before reset, I did get this message when trying to add a new subscriber manually:
WordPress database error: [Table ‘foo__list’ doesn’t exist] SELECT * FROM foo_wysija_list WHERE is_enabled > ‘0’ ORDER BY list_id DESC
This is an established site and other plugins have been installed successfully. I don’t know what happened but all works now.