error Duplicate entry '263' for key 'PRIMARY'

Hi

I am having a problem that started today. Below is the error message that appeared in my logs every time I do anything weather it is related to WP_online_store or not.

[Mon May 13 16:12:27 2013] [warn] [client 192.168.0.1] mod_fcgid: stderr: WordPress database error Duplicate entry ‘263’ for key ‘PRIMARY’ for query INSERT INTO configuration (configuration_id, configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, last_modified, date_added, use_function, set_function) VALUES (263, ‘Display Product Sort Order’, ‘PRODUCT_SORT_ORDER’, ‘0’, ‘Do you want to display the Product Sort Order column?’, 8, 29, ”, ”, NULL, NULL); made by require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), include_once(‘/plugins/wp-online-store/WP_online_store.php’), generate_config, referer: http://mysite/wp-admin/admin.php?page=WP_online_store&submenu=index

Below is the configuration table record 263

“263”,”Display Product Sort Order”,”PRODUCT_SORT_ORDER”,”0″,”Do you want to display the Product Sort Order column?”,”8″,”29″,”0000-00-00 00:00:00″,”0000-00-00 00:00:00″,””,””

Any ideas?