Results Not Shown (need assistance on what to change)

This:

global $wp_query;
$args = array_merge( $wp_query->query, array( 'posts_per_page' => 16 ) );
query_posts( $args );

This is used to set the posts_per_page to 16. A better method to do that is described here.

Thank you very much, Mikko. By removing those lines of code and adding the additional code to the functions.php, it’s working like a charm! I really appreciate your help!