wordpress 3.8.1 category page 2 error 404 not found / custom post type

Question

first the problem, then the tries.

Problem

The problem is that i get a 404 NOT FOUND error if i visit another page than the first category page. On the cat

Answer 1

I had the same problem with my custom post taxonomies pagination. Older posts page was coming with a 404 page not found. This issue is related to WP taxonomy slug so you have to rewrite rules for your custom post type taxonomies like this below:

function generate_taxonomy_rewrite_rules( $wp_rewrite ) {

    $rules = array();

    $post_types = get_post_types( array( 'public' => true, '_builtin' => false ), 'objects' );
    $taxonomies = get_taxonomies( array( 'public' => true, '_builtin' => false ), 'objects' );

    foreach ( $post_types as $post_type ) {
        $post_type_name = $post_type->name;
        $post_type_slug = $post_type->rewrite['slug'];

        foreach ( $taxonomies as $taxonomy ) {
            if ( $taxonomy->object_type[0] == $post_type_name ) {
                $terms = get_categories( array( 'type' => $post_type_name, 'taxonomy' => $taxonomy->name, 'hide_empty' => 0 ) );
                foreach ( $terms as $term ) {
                    $rules[$post_type_slug . '/' . $term->slug . '/?$'] = 'index.php?' . $term->taxonomy . '=' . $term->slug;
                    $rules[$post_type_slug . '/' . $term->slug . '/page/?([0-9]{1,})/?$'] = 'index.php?' . $term->taxonomy . '=' . $term->slug . '&paged=' . $wp_rewrite->preg_index( 1 );
                }
            }
        }
    }

    $wp_rewrite->rules = $rules + $wp_rewrite->rules;

}

add_action('generate_rewrite_rules', 'generate_taxonomy_rewrite_rules');

This should work for all custom post type taxonomies and just use your default query loop without passing any arguments. Pages will be generated based on General -> Reading.