multiple category archives

I’m working on a site and using a plug in to show specific category archives (http://kwebble.com/blog/2007_08_15/archives_for_a_category).

Although this works fine, and works on the index.php – I have secondary category page and the archive will not work here.

See below (works) http://www.livingpaintings.org/news-and-events
(not working) http://www.livingpaintings.org/news-and-events/latest-events

I guess I’m trying to make two different archive templates… Is this possible?