I am experiencing the same issue and am wondering if there are there any updates on this? Is it possible for us to see the bugtracker or source repository/version control?
After having a look through the code I think I have narrowed down this issue to the query being made by RokSprocket to the K2 db.
This is using Joomla 3.2, Gantry 4.1.24 and RokSprocket 2.1.1
If you look at line 29 in /components/com_roksprocket/lib/RokSprocket/Provider/K2/Filter.php you should see the following:
$this->query->select('CONCAT_WS(",", t.id) AS tag_ids, CONCAT_WS(",", t.name) AS tag_names');
If you change this line to the following
$this->query->select('CONCAT_WS(",", t.id) AS tag_ids, CONCAT_WS(",", t.name) AS tags');
the error dissapears and you get the correct tags. BUT you only seem to get the first article tag for each K2 article.
Does anyone have any idea how to change this to get all the tags for each K2 article?
The following users have thanked you: David Q, BradyS