Warning: mysql_fetch_assoc():

Bonjour,
je veux savoir le prob de code suivant
( Warning: mysql_fetch_assoc(): 4 is not a valid MySQL result resource in C:\Program Files\EasyPHP 2.0b1\www\4.php on line 56 )
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<?php require_once('Connections/moicon.php'); ?>
<?php
$currentPage = $_SERVER["PHP_SELF"];

$maxRows_Recordset1 = 10;
$pageNum_Recordset1 = 0;
if (isset($_GET['pageNum_Recordset1'])) {
$pageNum_Recordset1 = $_GET['pageNum_Recordset1'];
}
$startRow_Recordset1 = $pageNum_Recordset1 * $maxRows_Recordset1;

mysql_select_db($database_moicon, $moicon);
$query_Recordset1 = "SELECT * FROM users";
$query_limit_Recordset1 = sprintf("%s LIMIT %d, %d", $query_Recordset1, $startRow_Recordset1, $maxRows_Recordset1);
$Recordset1 = mysql_query($query_limit_Recordset1, $moicon) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);

if (isset($_GET['totalRows_Recordset1'])) {
$totalRows_Recordset1 = $_GET['totalRows_Recordset1'];
} else {
$all_Recordset1 = mysql_query($query_Recordset1);
$totalRows_Recordset1 = mysql_num_rows($all_Recordset1);
}
$totalPages_Recordset1 = ceil($totalRows_Recordset1/$maxRows_Recordset1)-1;

$queryString_Recordset1 = "";
if (!empty($_SERVER['QUERY_STRING'])) {
$params = explode("&", $_SERVER['QUERY_STRING']);
$newParams = array();
foreach ($params as $param) {
if (stristr($param, "pageNum_Recordset1") == false &&
stristr($param, "totalRows_Recordset1") == false) {
array_push($newParams, $param);
}
}
if (count($newParams) != 0) {
$queryString_Recordset1 = "&" . htmlentities(implode("&", $newParams));
}
}
$queryString_Recordset1 = sprintf("&totalRows_Recordset1=%d%s", $totalRows_Recordset1, $queryString_Recordset1);

mysql_free_result($Recordset1);
?>
<table border="1" align="center">
<tr>
<td>UserID</td>
<td>UserName</td>
<td>Password</td>
</tr>
<?php do { ?>
<tr>
<td><a href="info.php?recordID=<?php echo $row_Recordset1['UserID']; ?>"> <?php echo $row_Recordset1['UserID']; ?>  </a> </td>
<td><?php echo $row_Recordset1['UserName']; ?>  </td>
<td><?php echo $row_Recordset1['Password']; ?>  </td>
</tr>
<?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
</table>
<br>
<table border="0" width="50%" align="center">
<tr>
<td width="23%" align="center"><?php if ($pageNum_Recordset1 > 0) { // Show if not first page ?>
<a href="<?php printf("%s?pageNum_Recordset1=%d%s", $currentPage, 0, $queryString_Recordset1); ?>">Premier</a>
<?php } // Show if not first page ?>
</td>
<td width="31%" align="center"><?php if ($pageNum_Recordset1 > 0) { // Show if not first page ?>
<a href="<?php printf("%s?pageNum_Recordset1=%d%s", $currentPage, max(0, $pageNum_Recordset1 - 1), $queryString_Recordset1); ?>">Précédent</a>
<?php } // Show if not first page ?>
</td>
<td width="23%" align="center"><?php if ($pageNum_Recordset1 < $totalPages_Recordset1) { // Show if not last page ?>
<a href="<?php printf("%s?pageNum_Recordset1=%d%s", $currentPage, min($totalPages_Recordset1, $pageNum_Recordset1 + 1), $queryString_Recordset1); ?>">Suivant</a>
<?php } // Show if not last page ?>
</td>
<td width="23%" align="center"><?php if ($pageNum_Recordset1 < $totalPages_Recordset1) { // Show if not last page ?>
<a href="<?php printf("%s?pageNum_Recordset1=%d%s", $currentPage, $totalPages_Recordset1, $queryString_Recordset1); ?>">Dernier</a>
<?php } // Show if not last page ?>
</td>
</tr>
</table>
Enregistrements <?php echo ($startRow_Recordset1 + 1) ?> à <?php echo min($startRow_Recordset1 + $maxRows_Recordset1, $totalRows_Recordset1) ?> sur <?php echo $totalRows_Recordset1 ?> <br>