Custom taxonomy and 404 not found issue

Hi there, i hope someone can help me with this issue which is driving me nuts.

I have created a simple plugin which registers a custom taxonomy (actors):

add_action('init', 'mct_register_actors_taxonomy', 0);

function mct_register_actors_taxonomy() {
	$labels = array(
		// Some label definitions
	);

	$args = array(
		'exclude_from_search'        => false,
		'hierarchical'               => false,
		'labels'                     => $labels,
		'show_ui'                    => true,
		'public'                     => true,
		'show_tagcloud'              => false,
		'show_in_nav_menus'          => false,
		'show_admin_column'          => true,
		'update_count_callback'      => '_update_post_term_count',
		'query_var'                  => true,
		'rewrite'                    => array( 'slug' => 'actor', 'with_front' => true)
  	);

	register_taxonomy( 'actors', array( 'post' ), $args );
}

I created 3 posts for testing purposes, for each one of them i added one actor, let’s say: Test Post One has “Jack Nicholson”, Test Post Two has “Angelina Jolie” and Test Post Three has “Michael Douglas”.

I have set permalink structure to custom: /%postname%-whatever

If i navigate to http://mydomain/test-post-one-whatever everything’s ok and so for the other two posts

If i navigate to http://mydomain/actor/angelina-jolie everything’s ok and so for the other two actors; the archive.php layout of my template seems to take care of this content.

However, i can’t manage to get http://mydomain/actor/ to work, it always throws 404 Not found Error.

I have tried to get it working by creating these files inside my template’s directory:

taxonomy.php, taxonomy-actors.php, taxonomy-actor.php archive-actors.php, archive-actor.php

But none of them seem to work (and yes, i flush my permalinks everytime i make changes), it’s still giving me 404.

I would like some advise on this topic since i’ve spent hours trying to figure out what’s the problem with no luck.