show post with thumbs

i solve it
in file static-random-posts.php at line 117 you have:

$posts_string .= "<li><a href='" . get_permalink($post->ID) . "' title='". esc_attr($post->post_title) ."'>" . esc_html($post->post_title) ."</a></li>\n";

add this :
". get_the_post_thumbnail($post->ID, thumbnail) . "<br /> before <a href='”
like this one

$posts_string .= "<li>". get_the_post_thumbnail($post->ID, thumbnail) . "<br /><a href='" . get_permalink($post->ID) . "' title='". esc_attr($post->post_title) ."'>" . esc_html($post->post_title) ."</a></li>\n";

now you have thumbs too….

bye from italy
Maurizio