I set up a custom taxonomy, called 'year'. I went into my database and changed the taxonomy of my year tags (2009, 2010, 2011, 2012, and 2013), and when you look in the admin, it reflects the number of posts associated to each year. However, when I click on the link in the tag list, I get the Not Found page.
I created a new year tag, 2014, and posted a test post. I still get the Not Found page.
http://hoosierhoopsreport.com/year/2014/
For the custom taxonomies, I created a plugin. It's activated, and the year and team (another one) options show up in the New Post admin page. I'm obviously missing a step since it's not creating archive pages for my year tags. (I haven't made any changes with the team tags yet. I only have 5 year tags, over 100 team tags.)
<?php
/**
* Plugin Name: Custom Taxonomy
* Description: Creates a custom taxonomy
* Version: 0.1
*/
add_action( 'init', 'create_my_taxonomies', 0 );
function create_my_taxonomies() {
register_taxonomy( 'team', 'post', array( 'hierarchical' => false, 'label' => 'Team', 'query_var' => true, 'rewrite' => true ) );
register_taxonomy( 'year', 'post', array( 'hierarchical' => false, 'label' => 'Year', 'query_var' => true, 'rewrite' => true ) );
}
?>