Hi, Another input to this module. I recently installed this to a store that did not have COWOA. When I tried to update information and send to customer, I got this error:

1054 Unknown column 'COWOA_order' in 'field list'
in:
[select customers_name, customers_email_address, orders_status, date_purchased, COWOA_order from zen_orders where orders_id = '20']


So a quick edit to this is to go into orders.php and take out the field COWOA_order, there are two in line 54 and 91.

In case you are updating this module, it would be best to have a version with COWOA and without COWOA. Thanks!