Форумы / Cotonti / Extensions / Content Internationalization (i18n) of Sienna

I'm getting there, but I get the following error:

Fatal error: SQL error 42S22: Column not found: 1054 Unknown column 'tag_locale' in 'where clause'

#0  cot_diefatal(SQL error 42S22: Column not found: 1054 Unknown column 'tag_locale' in 'where clause') called at [/home/k3098kru/public_html/_subsites/sai_siena/system/database.php:436]
#1  CotDB->query(SELECT `tag` FROM cot_tag_references
		WHERE tag_item = 2 AND tag_area = 'pages' AND tag_locale = 'nl') called at [/home/k3098kru/public_html/_subsites/sai_siena/plugins/tags/inc/tags.functions.php:204]
#2  cot_tag_list(2, pages, Array ([tag_locale] => nl)) called at [/home/k3098kru/public_html/_subsites/sai_siena/plugins/tags/tags.page.main.php:33]
#3  include(/home/k3098kru/public_html/_subsites/sai_siena/plugins/tags/tags.page.main.php) called at [/home/k3098kru/public_html/_subsites/sai_siena/modules/page/inc/page.main.php:128]
#4  require_once(/home/k3098kru/public_html/_subsites/sai_siena/modules/page/inc/page.main.php) called at [/home/k3098kru/public_html/_subsites/sai_siena/page.php:46]

Do I need to add it manually, or is it done via the setup?