Lazyest Gallery - Fehler in Admin-Page

<?php
 // Check for new versions
 $filename = "[URL="http://lazyest.keytwo.net/pub/service/version.txt"]http://lazyest.keytwo.net/pub/service/version.txt[/URL]";
 $act_version = '';
 if ($handle = @fopen($filename, "rb")) {
  while (!feof($handle)) {
   $act_version .= fread($handle, 8192);
  }
  fclose($handle);
  if (LG_VERSION == $act_version) {
   ?><div style="font-size:x-small;text-align:center;padding:0px;width:95%;border:1px solid #3fbd3f;background:#beffbe;color:#088000;">
    <?php _e('Your LG installation is up to date.', $lg_text_domain);?>
   </div><?php
  } else {
   ?><div style="font-size:x-small;text-align:center;padding:2px;color:red;width:92%;border:1px solid #ff0000;background:#ffdddd">
    <?php _e('A new vesion of LG is available for download:', $lg_text_domain);
     // Check for zip or tar...
     $tar = "[URL="http://lazyest.keytwo.net/pub/lazyest_gallery_$act_version.tar.gz"]http://lazyest.keytwo.net/pub/lazyest_gallery_$act_version.tar.gz[/URL]";
     $zip = "[URL="http://lazyest.keytwo.net/pub/lazyest_gallery_$act_version.zip"]http://lazyest.keytwo.net/pub/lazyest_gallery_$act_version.zip[/URL]";
     $filednl = '';
     if ($handle = @fopen($tar, "rb")){
      $filednl .= $tar;
      fclose($handle);
     } else if ($handle = @fopen($zip, "rb")){
      $filednl .= $zip;
      fclose($handle);
     }
     // ...and returns the right url
    ?>
    <a href="<?php echo $filednl; ?>" title="Download it!" style="text-decoration:blink !important;"><?php echo " ".$act_version; ?></a>
   </div><?php
  }
 }
 // End of check for new versions
?>