After updating to WP 3.8, this plugin stops working.

Can you share a screenshot of what you see? Which theme are you using?

For me it does not work too with WP 3.8 . I’m using XIN-magazine theme. It just displays the first author on the list and that is it.

Sorry I have solved that by following the instructions.

Sorry for the delay. Now that we are on 3.8.1 WP and have had a couple revisions to this plugin the author is working but I am only getting one author to appear.

Vertex Theme

valleyhope.org/CMS/the-cost-of-addiction/

At the bottom you will notice that this article should have 2 authors, not just the one.

Eddie: it sounds like you might need to integrate the template tags into your theme.