Love this contrib, need just a little help. I'm trying to issue coupons for 100% off for contest winners. During checkout, a CC is still required to proceed, the discount is then correctly applied but since the total amount is $0.00 the CC module returns an error:
"A valid amount is required. - Your credit card could not be authorized for this reason. Please correct any information and try again or contact us for further assistance."
Am I missing something obvious? How can I issue 100% off coupons?