Query Posts with Custom Taxonomy from a Custom Post Type

I’ve been bashing my head against my desk over this for the past day or so…I have created a custom post type called ‘advertisement’ and a custom taxonomy within that post type called ‘group’. I’ve created a bunch of different posts and assigned them to the various groups that I have created, but the problem is when I try to query the posts for my custom taxonomy, it comes up empty.

When I try to query a regular post with the default category it works fine, so I’m beginning to think it has something to do with the way I have setup my taxonomies. I’ve already tried resetting permalinks, but to no luck.

Here is what I have so far:

If anyone could shed some light on where I might have gone wrong, that would be wonderful.

Thanks!

/*-----------------------------------------------------------------------------------*/
    /*	Located in /includes/custom-post-types/
    /*-----------------------------------------------------------------------------------*/

    // Initialize the post type

    function cpt_advertisements() {
    	$labels = array(
    		'name'					=> __( 'Advertisements', 'post type general name' ),
    		'singular_name'			=> __( 'Advertisement', 'post type singular name' ),
    		'add_new'				=> __( 'Add New', 'advertisement' ),
    		'add_new_item'			=> __( 'Add New Advertisement' ),
    		'edit_item'				=> __( 'Edit Advertisement' ),
    		'new_item'				=> __( 'New Advertisement' ),
    		'all_items'				=> __( 'All Advertisements' ),
    		'view_item'				=> __( 'View Advertisements' ),
    		'search_items'			=> __( 'Search Advertisements' ),
    		'not_found'				=> __( 'No advertisements found' ),
    		'not_found_in_trash'	=> __( 'No advertisements found in the Trash' ),
    		'parent_item_colon'		=> '',
    		'menu_name'				=> 'Advertisements',
    	);
    	$args = array(
    		'labels'				=> $labels,
    		'description'			=> 'Holds our advertisements and advertisement specific data',
    		'public'				=> true,
    		'menu_position'			=> 20,
    		'supports'				=> array( 'title' ),
    		'has_archive'			=> false,
    		'menu_icon'				=> 'dashicons-chart-line',
    		'taxonomies'			=> array( 'group' ),
    	);
    	register_post_type( 'advertisement', $args );
    }
    add_action( 'init', 'cpt_advertisements' );

    // Add custom taxonomies to the post type

    function create_my_taxonomies() {
    	register_taxonomy(
    		'group',
    		'advertisement',
    		array(
    			'labels' => array(
    			'name' => 'Groups',
    			'add_new_item' => 'Add New Group',
    			'new_item_name' => "New Group"
    		),
    		'show_ui' => true,
    		'show_tagcloud' => false,
    		'hierarchical' => true,
    		'public' => true
    		)
    	);
    }
    add_action( 'init', 'create_my_taxonomies', 0 );

    /*-----------------------------------------------------------------------------------*/
    /*	Located in: sidebar.php
    /*-----------------------------------------------------------------------------------*/
		// Query the CPT for Posts from a specific custom taxonomy
		$args = array(
			'post_type' => 'advertisement',
			'tax_query' => array(
				array(
					'taxonomy' => 'group',
					'terms' => array( 'homepage' ),
				)
			)
		);

		$wp_query = new WP_Query( $args );

	?>

	<?php if ( $wp_query->have_posts() ) : ?>
		<div class="widget" id="advertisement_widget">

			while ( $wp_query->have_posts() ) : $wp_query->the_post();
				$adv_image = getUploadedImageSrc();
				$adv_url = get_post_meta( get_the_ID(), 'adv_url', true );
				echo '<a href="' . $adv_url . '"><img src="' . $adv_image . '" alt="' . get_the_title() . '" /></a>';
			endwhile; wp_reset_postdata();

		</div>
	<?php else : ?>
		<p>No Advertisements available!</p>
	<?php endif; ?>