Error in DataAssist wizard

I am getting this error, also I am wondering why I am getting this error as code is generated by DATA ASSIST, we don't have to touch the code while we do it with Data Assist.

Fatal error: Class name must be a valid object or a string in C:\inetpub\wwwroot\resorts\admin\hotels_Results.php on line 31

CODE IS HERE
=============
<?php require_once('../Connections/connTravel.php'); ?>
<?php
//WA Database Search Include
require_once("../WADbSearch/HelperPHP.php");
?>
<?php
//WA Database Search (Copyright 2005, WebAssist.com)
//Recordset: WADAhotels;
//Searchpage: hotels_Search.php;
//Form: WADASearchForm;
$WADbSearch1_DefaultWhere = "";
if (!session_id()) session_start();
if ((isset($_GET["Search_x"]) && $_GET["Search_x"] != "")) {
$WADbSearch1 = new FilterDef;
$WADbSearch1->initializeQueryBuilder("MYSQL","1");
//keyword array declarations

//comparison list additions
$WADbSearch1->addComparisonFromEdit("hotel","S_hotel","AND","Includes",0);
$WADbSearch1->addComparisonFromList("star","S_star","AND","=",1);
$WADbSearch1->addComparisonFromList("country","S_country","AND","=",1);
$WADbSearch1->addComparisonFromList("atoll","S_atoll","AND","=",1);
$WADbSearch1->addComparisonFromEdit("pricerange","S_pricerange","AND","Includes",0);

//save the query in a session variable
if (1 == 1) {
$_SESSION["WADbSearch1_hotels_Results"]=$WADbSearch1->whereClause;
}
}
else {
$WADbSearch1 = new $WADbSearch1;
$WADbSearch1->initializeQueryBuilder("MYSQL","1");
//get the filter definition from a session variable
if (1 == 1) {
if (isset($_SESSION["WADbSearch1_hotels_Results"]) && $_SESSION["WADbSearch1_hotels_Results"] != "") {
$WADbSearch1->whereClause = $_SESSION["WADbSearch1_hotels_Results"];
}
else {
$WADbSearch1->whereClause = $WADbSearch1_DefaultWhere;
}
}
else {
$WADbSearch1->whereClause = $WADbSearch1_DefaultWhere;
}
}
$WADbSearch1->whereClause = str_replace("\\''", "''", $WADbSearch1->whereClause);
$WADbSearch1whereClause = '';
?>
<?php
//WA Database Search (Copyright 2005, WebAssist.com)
//Recordset: WADAhotels;
//Searchpage: hotels_Search.php;
//Form: WADASearchForm;
$WADbSearch1_DefaultWhere = "";
if (!session_id()) session_start();
if ((isset($_GET["Search_x"]) && $_GET["Search_x"] != "")) {
$WADbSearch1 = new FilterDef;
$WADbSearch1->initializeQueryBuilder("MYSQL","1");
//keyword array declarations

//comparison list additions
$WADbSearch1->addComparisonFromEdit("hotel","S_hotel","AND","Includes",0);
$WADbSearch1->addComparisonFromList("star","S_star","AND","=",1);
$WADbSearch1->addComparisonFromList("atoll","S_atoll","AND","=",1);
$WADbSearch1->addComparisonFromEdit("pricerange","S_pricerange","AND","Includes",0);

//save the query in a session variable
if (1 == 1) {
$_SESSION["WADbSearch1_hotels_Results"]=$WADbSearch1->whereClause;
}
}
else {
$WADbSearch1 = new FilterDef;
$WADbSearch1->initializeQueryBuilder("MYSQL","1");
//get the filter definition from a session variable
if (1 == 1) {
if (isset($_SESSION["WADbSearch1_hotels_Results"]) && $_SESSION["WADbSearch1_hotels_Results"] != "") {
$WADbSearch1->whereClause = $_SESSION["WADbSearch1_hotels_Results"];
}
else {
$WADbSearch1->whereClause = $WADbSearch1_DefaultWhere;
}
}
else {
$WADbSearch1->whereClause = $WADbSearch1_DefaultWhere;
}
}
$WADbSearch1->whereClause = str_replace("\\''", "''", $WADbSearch1->whereClause);
$WADbSearch1whereClause = '';
?>