parandroid

Put code below to your functions.php

add_filter('pre_get_posts', 'query_post_type');
function query_post_type($query) {
  if(is_category() || is_tag()) {
    $post_type = get_query_var('post_type');
	if($post_type)
	    $post_type = $post_type;
	else
	    $post_type = array('post','cpt'); // replace cpt to your custom post type
    $query->set('post_type',$post_type);
	return $query;
    }
}

Hope it will work for you.

This is not what I meant, but I had buttoned it, and still thank you for your reply.

Yes, You are clever and fast… Exactly what I needed, Thank you very much!

It’s done, version 1.5b2 is custom fileds taxonomies!

But I had another problem:

I register a new post type “music”:

register_post_type( ‘music’ , array(
‘label’ => __(‘Music’),
‘singular_label’ => __(‘Music’),
‘public’ => true,
‘show_ui’ => true,
‘publicly_queryable’ => true,
‘capability_type’ => ‘post’,
‘hierarchical’ => false,
‘rewrite’ => true,
‘query_var’ => true,
‘supports’ => array(‘title’, ‘author’, ‘editor’,’thumbnail’,’excerpts’,’trackbacks’,’custom-fields’,’comments’,’revisions’,’page-attributes’)
));

When I active “Query Multiple Taxonomies”, a tag query like
“https://localhost/wordpress/?tag=test”
will show posts with “post” type and has tag “test”, not show posts with “music” type even has tag “test”.

Oh, I downloaded, it’s 1.1.2a, and still can’t fix problem…

Thanks, scribu! And I’m sorry for wrong spelling your name:)