The changes to tag.rb in 1686 introduced syntax that is invalid in PostgreSQL:
ActionView::TemplateError (PGError: ERROR: LIMIT #,# syntax is not supported
HINT: Use separate LIMIT and OFFSET clauses.
:
SELECT tags.id, tags.name, tags.display_name, COUNT(articles_tags.article_id) AS article_counter
FROM tags tags LEFT OUTER JOIN articles_tags articles_tags
ON articles_tags.tag_id = tags.id
LEFT OUTER JOIN contents articles
ON articles_tags.article_id = articles.id
WHERE articles.published = 't'
GROUP BY tags.id, tags.name, tags.display_name
ORDER BY article_counter DESC
LIMIT 0, 25
) on line #1 of vendor/plugins/tag_sidebar/views/content.rhtml:
This patch changes the syntax to a more compliant variation.