A few users have reported an "Invalid Credit Card" error message during registration.  Occasionally our back-end fulfillment site may be unable to communicate with their upstream credit card validation servers.  Be sure you are connected to the Internet, and please disable any firewalls or bypass proxy servers while registering.

Please try registration again, and note the exact error message or error number that may appear.  You must use Visa, Mastercard, Discover, American Express, JCB or PayPal.  If you choose anything but PayPal you must enter the Credit Card Number, Card Security Code and Expiration Date exactly.  If all credit cards fail to work, you may try PayPal.

Please feel free to contact us at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it if you continue to have problems registering or purchasing.