Reply To: Featured image in simplecorp

Try this (copy-paste):

add_image_size( 'featured-image', 555, 195, true );

and

<div class="resize">
<!–?php 
if ( has_post_thumbnail()) {
$large_image_url = wp_get_attachment_image_src( get_post_thumbnail_id(), 'large');
echo '<a data-rel="prettyPhoto" href="' . $large_image_url[0] . '" title="' . the_title_attribute('echo=0′) . '"  rel="nofollow">';
the_post_thumbnail('full');
echo '</a>';
}
?>
</div>