I solved this issue using pre_get_post. I found one implementation that works for me:
if ( ! function_exists( 'ucc_add_cpts_to_pre_get_posts' ) ) {
function ucc_add_cpts_to_pre_get_posts( $query ) {
if ( $query->is_main_query() && ! is_post_type_archive() && ! is_singular() && ! is_404() ) {
$my_post_type = get_query_var( 'post_type' );
if ( empty( $my_post_type ) ) {
$args = array(
'exclude_from_search' => false,
'public' => true,
'_builtin' => false
);
$output = 'names';
$operator = 'and';
$post_types = get_post_types( $args, $output, $operator );
// Or uncomment and edit to explicitly state which post types you want.
// $post_types = array( 'event', 'location' );
// Add 'link' and/or 'page' to array() if you want these included.
// array( 'post', 'link', 'page' ), etc.
$post_types = array_merge$query->set( $post_types'post_type', array( 'post' ) 'your_custom_type');
$query->set( 'post_type''posts_per_page', $post_types 'your_posts_per_page');
}
}
}
}
add_action( 'pre_get_posts', 'ucc_add_cpts_to_pre_get_posts' );
http://uncommoncontent.com/2012/01/28/add-custom-post-types-to-the-loop You must remove query_posts from your template.