[smooth-c]

I'm using the integration plugin between Interspire's Email Markerter and i'm now, out of the blue experiencing these problems.

This seems to be working flawlessly except lately i've noticed that it's missed out a few members and not added them to my mailing list.

Any ideas why this would happen? Here's my plugin code;

$username = $userinfo['username']; 
$email= $userinfo['email']; 
$userid= $userinfo['userid']; 


$xml = "<xmlrequest> 
    <username>admin</username> 
    <usertoken>XX8410b36f01de9fe7df722ab2864677afddfaXX</usertoken> 
    <requesttype>subscribers</requesttype> 
    <requestmethod>AddSubscriberToList</requestmethod> 
    <details> 
        <emailaddress>$email</emailaddress> 
        <mailinglist>1</mailinglist> 
        <format>html</format> 
        <confirmed>yes</confirmed> 
        <customfields> 
            <item> 
                <fieldid>12</fieldid> 
                <value>$username</value> 
            </item> 
            <item> 
                <fieldid>13</fieldid> 
                <value>$userid</value> 
            </item> 
        </customfields> 
    </details> 
</xmlrequest> 
"; 

$ch = curl_init('http://www.maximum-jackson.com/interspire/xml.php'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); 
$result = @curl_exec($ch); 
if($result === false) { 
    echo "Error performing request"; 
} 
else { 
    $xml_doc = simplexml_load_string($result); 
    //echo 'Status is ', $xml_doc->status, '<br/>'; 
    if ($xml_doc->status == 'SUCCESS') { 
        //echo 'Data is ', $xml_doc->data, '<br/>'; 
    } else { 
        //echo 'Error is ', $xml_doc->errormessage, '<br/>'; 
    } 
}  

Any help would be greatly appreciated!