I couldn’t find anything on this either.
However, Dangrgals solution didn’t work for me but sent me in the right direction.
$lcp_display_output .= '<a href="';
$lcp_display_output .= get_permalink($single->ID);
$lcp_display_output .= '">Read more...</a>';
The above code will provide you with a correct link for each and every post. It’s not neat, but it works.
