Google checkout internal error

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ASP

I found the google checkout sample code for classic asp from the link http://code.google.com/p/google-checkout-classicasp-sample-code/downloads/list[^]. When i tried to run the shoppingcart.asp form, its not going to google checkout page rather displaying Error message as below:

<?xml version="1.0" encoding="UTF-8"?>
<error xmlns="http://checkout.google.com/schema/2" serial-number="0fdb7b10-b114-4821-b56e-0dbc9f0704c8">
  <error-message>Internal error in server</error-message>
</error>

Can anyone help me in this??