I am getting response "Global Error Receipt" while sending purchase request using moneris api "eSELECTplus_dotNet_API" version 2.5.5.0

herewith my request

static void Main(string[] args)
{
string host = "esqa.moneris.com/mpg/";
string store_id = "store3";
string api_token = "yesguy";
string order_id;
Console.Write("Please enter an order ID: ");
order_id = Console.ReadLine();
string cust_id = "13";
string amount = "1.00";
string card = "5454545454545454";
string exp = "0817";
string crypt = "0";
string status = "false";

HttpsPostRequest mpgReq =
new HttpsPostRequest(host, store_id, api_token, status,
new Purchase(order_id, cust_id, amount, card, exp, crypt));

try
{
Receipt receipt = mpgReq.GetReceipt();

Console.WriteLine("CardType = " + receipt.GetCardType());
Console.WriteLine("TransAmount = " + receipt.GetTransAmount());
Console.WriteLine("TxnNumber = " + receipt.GetTxnNumber());
Console.WriteLine("ReceiptId = " + receipt.GetReceiptId());
Console.WriteLine("TransType = " + receipt.GetTransType());
Console.WriteLine("ReferenceNum = " + receipt.GetReferenceNum());
Console.WriteLine("ResponseCode = " + receipt.GetResponseCode());
Console.WriteLine("ISO = " + receipt.GetISO());
Console.WriteLine("BankTotals = " + receipt.GetBankTotals());
Console.WriteLine("Message = " + receipt.GetMessage());
Console.WriteLine("AuthCode = " + receipt.GetAuthCode());
Console.WriteLine("Complete = " + receipt.GetComplete());
Console.WriteLine("TransDate = " + receipt.GetTransDate());
Console.WriteLine("TransTime = " + receipt.GetTransTime());
Console.WriteLine("Ticket = " + receipt.GetTicket());
Console.WriteLine("TimedOut = " + receipt.GetTimedOut());
Console.WriteLine("StatusCode = " + receipt.GetStatusCode());
Console.WriteLine("StatusMessage = " + receipt.GetStatusMessage());
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine(e);
}
}

and response

<?xml version="1.0"?>

-<response>

-<receipt>

<ReceiptId>Global Error Receipt</ReceiptId>

<ReferenceNum>null</ReferenceNum>

<ResponseCode>null</ResponseCode>

<ISO>null</ISO>

<AuthCode>null</AuthCode>

<TransTime>null</TransTime>

<TransDate>null</TransDate>

<TransType>null</TransType>

<Complete>false</Complete>

<Message>null</Message>

<TransAmount>null</TransAmount>

<CardType>null</CardType>

<TransID>null</TransID>

<TimedOut>null</TimedOut>

</receipt>

</response>