RSS.php problem med feed.

Her er kilde-koden:

<?php require_once('Connections/cliche.php'); ?>

<?php
mysql_select_db($database_cliche, $cliche);
$query_rss = "SELECT * FROM photo ORDER BY `date` DESC";
$rss = mysql_query($query_rss, $cliche) or die(mysql_error());
$row_rss = mysql_fetch_assoc($rss);
$totalRows_rss = mysql_num_rows($rss);

// ##########################################################################################//
// RSS 2.0 FEED
// ##########################################################################################//
    $output = "<?xml version='1.0' encoding='ISO-8859-1'?>
    <rss version=\"2.0\">
    <channel>
    <title>Leander Joergensen Photographer</title>
    <link>leanderj.dk</link>
    <description>new picture</description>
 
    ";
do {
        $output .=" <item>
        <title>".$row_rss['title']."</title>
        <link>www.leanderj.dk</link>
        <description>New picture uploaded</description>
        <pubDate>".$row_rss['date']."</pubDate>
        </item>
        ";
  } while ($row_rss = mysql_fetch_assoc($rss));     
    $output .= "
  </channel>
</rss>";
    header("Content-type:application/xml");
    echo $output;
    exit;
?>
<?php
mysql_free_result($rss);
?>

Jeg har vist selv opdaget problemet, "<?xml version='1.0' encoding='ISO-8859-1'?>" kom til at stå på linje 2.