You have an error in your SQL syntax

Olá, amigos, é o seguinte: Tenho um sistema de hospedagem de imagens, onde os usuários cadastrados podem alterar seus dados. Quando o usuário clica pra alterar os dados, ele altera mas retorna esse erro.

Isso começou a acontecer depois q migrei de servidor :(

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(First_Name = 'Willian', Last_Name = 'Cima', Email_Address = 'contato@link' at line 1

(fiz o teste utilizando minha conta)

Segue o script do editprofile.php:

<?php
include"config.php";

 $qData = "select * from `users` where (`Uid` = '".$_SESSION["Uid"]."')";
 $rData = mysql_query($qData) or die(mysql_error());
 $aData = mysql_fetch_array($rData);

$Username = $_POST[Username];
$Password = $_POST[Password];
$First_Name = $_POST[First_Name];
$Last_Name = $_POST[Last_Name];
$Email_Address = $_POST[Email_Address];
$Country = $_POST[Country];
$Status = $_POST[Status];
$t = time();

$q1 = "update `users` set (`First_Name` = '".$First_Name."', `Last_Name` = '".$Last_Name."', `Email_Address` = '".$Email_Address."', `Country` = '".$Country."') where (`Uid` = '".$_SESSION["Uid"]."')";
mysql_query($q1) or die(mysql_error());

header("location: myimages.php");
?>

O que ocorre?

echo $ql; exit();

mysql_query($q1) or die(mysql_error());

UPDATE `users` SET First_Name = '$First_Name', Last_Name = '$Last_Name', Email_Address = '$Email_Address', Country = '$Country' WHERE Uid = '".$_SESSION["Uid"]."'";