Error when upgrading from 1.5.6.4 to 2.2.0

When upgrading my site at http://flamingosflooring.com/products from 1.5.6.4 to 2.2.0 I get the following error:

Error Code(0): Error: Unknown column 'code' in 'field list'
Error No: 1054
Error in: /home2/flaminj6/public_html/products/install/model/upgrade/1002.php line 8
INSERT INTO `oc_setting` SET `key` = 'config_product_limit', `value` = '20', `code` = 'config', `store_id` = 0 in /home2/flaminj6/public_html/products/system/library/db/mysql.php on line 54

I have the third-party template "Journal" installed (http://themeforest.net/item/journal-adv ... me/4260361) but by site is otherwise a standard OpenCart installation.

Prior to upgrading I checked on the Journal theme and it indicates that it is compatible with OpenCart 2.2.x.

What is the fix for this problem?