>>To correct your installation in the meantime, you can manually add zen_ to the name of all the qbi tables, and then go to the zen_orders and zen_products tables and:
Add a column called qbi_imported to each one, setting it to TINYINT, UNSIGNED, NOT NULL, DEFAULT 2. After creating those columns, go back to them and change the DEFAULT to 0


I do this using PhpMyAdmin? Or somewhere in the code?