Does nothing in WP 4.0

My loop looks like this:

<?php if (have_posts()) : ?>

    <?php while (have_posts()) : the_post(); ?>

			<?php if( !is_sticky( get_the_ID() ) ): ?>

          <?php get_template_part( 'content', 'home' ); ?>

      <?php endif; ?>

    <?php endwhile; ?>

    <div id="nav-below">
      <div class="alignleft"><?php next_posts_link('&laquo; Older Entries') ?></div>
      <div class="alignright"><?php previous_posts_link('Newer Entries &raquo;') ?></div>
    </div>

    <?php else : ?>

    <h2 class="center">Not Found</h2>
    <p class="center">Sorry, but you are looking for something that isn't here.</p>
    <?php get_search_form(); ?>

  <?php endif; ?>

Doesn’t seem that unusual to me… but this plugin doesn’t do anything when I install it. Is there something I’m missing?

https://wordpress.org/plugins/infinite-scroll/