Just got the email (was only the order status earlier):
Dear Something Fishy,
Thank you for your recent order with Costco.com.
The custom item you ordered was not configured correctly. As a result, we are unable to process your order and have cancelled it. Your credit card has not been charged.
We apologize for any inconvenience this may cause. We value you as a customer and appreciate your business. If you should have additional questions and/or concerns, contact us via email or call our Member Service Center at 1-800-955-2292.
Sincerely,
Costco.com Member Service