An example of how to write your own breadcrumbs function in WordPress

goddard_breadbrumbs.php

function goddard_breadcrumbs( $post_id = FALSE ) {
	global $post;
	if( $post_id ) {
		$post = get_post( $post_id );
	}
	if( !$post && !is_404() && !is_search() ) {
		return false;
	}

	$crumbs = array(
		array(
			'label' => 'Home',
			'url' => get_site_url(),
			'current' => false
		)
	);

	if( is_page() ) {
		$page_crumbs = array(
			array(
				'label' => $post->post_title,
				'url' => get_permalink( $post->ID ),
				'current' => true
			)
		);

		$parent = $post;
		while( $parent->post_parent != 0 ) {
			$parent = get_page( $parent->post_parent );
			$page_crumbs[] = array(
				'label' => $parent->post_title,
				'url' => get_permalink( $parent->ID ),
				'current' => false
			);

		}

		$page_crumbs = array_reverse( $page_crumbs );
		$crumbs = array_merge($crumbs, $page_crumbs);

	} elseif( is_category() ) {
		$term = get_queried_object();
		$crumbs[] = array(
			'label' => $term->name,
			'current' => true
		);

	} elseif( is_author() ) {
		$crumbs[] = array(
			'label' => get_the_author(),
			'current' => true
		);

	} elseif( is_single() && $post->post_type == 'people' ) {

		$data = get_goddard_people_options();
		$crumb_title = $data['first_name'] . ' ' . $data['last_name'];
		if( $data['suffix'] ) {
			$crumb_title .= ', ' . $data['suffix'];
		}

		$crumbs[] = array(
			'label' => 'People',
			'url' => get_site_url() . '/people/',
		);

		$crumbs[] = array(
			'label' => $crumb_title,
			'current' => true
		);

	} elseif( is_single() && $post->post_type == 'academics' ) {

		$crumbs[] = array(
			'label' => 'Academics',
			'url' => get_site_url() . '/academics/',
		);

		$academic_crumbs = array(
			array(
				'label' => $post->post_title,
				'current' => true
			)
		);

		while( $post->post_parent > 0 ) {
			$post = get_post( $post->post_parent );

			$academic_crumbs[] = array(
				'label' => $post->post_title,
				'url' => get_permalink( $post->ID )
			);
		}

		$crumbs = array_merge($crumbs, array_reverse( $academic_crumbs ) );

	} elseif( is_single() && $post->post_type == 'tribe_events' ) {

		$crumbs[] = array(
			'label' => 'Events',
			'url' => tribe_get_events_link()
		);

		$crumbs[] = array(
			'label' => get_the_title(),
			'current' => true
		);

	} elseif( is_single() && $post->post_type == 'post' ) {

		$post_crumbs = array();
		$cats = wp_get_object_terms( $post->ID, 'category' );
		foreach( $cats as $cat ) {
			$post_crumbs[] = array(
				'label' => $cat->name,
				'url' => get_term_link( $cat ),
				'current' => false
			);
		}

		$post_crumbs[] = array(
				'label' => apply_filters('the_title', $post->post_title),
				'url' => get_permalink( $post->ID ),
				'current' => true
			);

		$crumbs = array_merge($crumbs, $post_crumbs);

	}


	$output = '<ol class="breadcrumbs">';
	$slash = ' <span class="slash" aria-hidden="true">/</span>';
	foreach( $crumbs as $crumb ) {
		$output .= '<li>';
		if( !$crumb['current'] || !isset( $crumb['current'] ) ) {
			$output .= '<a href="' . $crumb['url'] . '">' . $crumb['label'] . '</a>';
			$output .= $slash;
		} else {
			$output .= $crumb['label'];
		}
		$output .= '</li>';
	}

	$output .= '</ol>';

	echo $output;

	//Reset $post back to the original query...
	wp_reset_postdata();
}