ProBlog and Prev/Next Links Generated When They Should Not Be

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This code exists in the pb_post.php Page Type:

<div class="ccm-next-previous-wrapper">
      <br/>
      <? if ($prev_link): ?>
         <div class="ccm-next-previous-previouslink">
            <?= '<a href="'.$prev_link.'" alt="prev_page">« '.t('Previous').'</a>';?>
         </div>
      <? endif ?>
      <? if ($next_link): ?>
         <div class="ccm-next-previous-nextlink">
            <?= '<a href="'.$next_link.'" alt="next_page">'.t('Next').' »</a>';?>
         </div>
      <? endif ?>
      <div class="spacer"></div> 
   </div>


On my site, it returns links, even if there should be none. For example, I use the pb_post type for my blog's contact page and get this code generated for pref/next links:

<div class="ccm-next-previous-wrapper">
   <br>
   <div class="ccm-next-previous-previouslink">
      <a alt="prev_page" href="/search/">« Previous</a>
   </div>
   <div class="ccm-next-previous-nextlink">
      <a alt="next_page" href="/!trash/guestbook/">Next »</a>
   </div>
   <div class="spacer"></div> 
</div>


Do I have something configured wrong, or is ProBlog misbehaving?

bobrocke