Galerie photo en flex

salut,
je veux faire une galerie photo dans un tilelist en prenant les sources des images à partir d'une base de données en localhost. Cependant, les images ne s'affiche pas.
Le fichier galerie.mxml:

Code:

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<?xml version="1.0"?>
<!-- dpcontrols/TileListDataProvider.mxml -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="getPhoto.send()" >
 
	<mx:HTTPService
		id="getPhoto"
		resultFormat="e4x"
		url="C:\wamp\www\test-debug\services\getPhoto.php"
		useProxy="false" />
 
		<mx:TileList dataProvider="{getPhoto.lastResult.rss.channel}" width="390" height="288" x="218">
		<mx:itemRenderer>
			<mx:Component>
				<mx:VBox>
					<mx:Image source="{data.img}"/>
				</mx:VBox>
			</mx:Component>
		</mx:itemRenderer>
		</mx:TileList>
 
	</mx:Application>

Le fichier getPhoto.php:

Code:

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<?PHP
ini_set('display_errors', "1");
ini_set('error_reporting', E_ALL ^ E_NOTICE);
header("Content-type: text/xml"); 
 
//Connect to Database
include 'dbconnect.php';
 
$linkID = mysql_connect($db_host, $db_user, $db_pwd) or die("Could not connect to host."); 
mysql_select_db($db_name, $linkID) or die("Could not find database."); 
 
$query = "SELECT * FROM photos ORDER BY id_ DESC"; 
$resultID = mysql_query($query, $linkID) or die("Data not found."); 
 
$xml_output = "<?xml version='1.0' encoding='utf-8'?>\n"; 
$xml_output .= "<rss>\n"; 
 
 
for($x = 0 ; $x < mysql_num_rows($resultID) ; $x++){ 
    $row = mysql_fetch_assoc($resultID); 
    $xml_output .= "\t<channel>\n";
 
 
        // Escaping illegal characters 
        $row['text'] = str_replace("&", "&", $row['text']); 
        $row['text'] = str_replace("<", "<", $row['text']); 
        $row['text'] = str_replace(">", "&gt;", $row['text']); 
        $row['text'] = str_replace("\"", "&quot;", $row['text']); 
    $xml_output .= "\t\t<id_>" . $row['id_'] . "</id_>\n";
    $xml_output .= "\t\t<img>" . $row['img'] . "</img>\n";
    $xml_output .= "\t\t<des>" . $row['des'] . "</des>\n";  
    $xml_output .= "\t\t<link>" . $row['link'] . "</link>\n";     
    $xml_output .= "\t</channel>\n"; 
} 
$xml_output .= "</rss>"; 
echo $xml_output; 
?>

Quelle est le problème ? :(