Can you tell us how you tried to download the card?
Were you using a card reader plugged into your mac or connecting the camera to your Mac?
Can you also tell us what type of card the one you downloaded successfully was?
I am terribly sorry, I never received notice of your reply to me and was totally unaware you had responded.
As you fixed the issue yourself you have two options, the first is for me to ask for this question to be closed and then you can leave your deposit on the site for next time or I can put in a refund request for you so that your deposit is returned to you.
Please let me know what you prefer.
I will put in your refund request and hopefully next time we will be of more assistance.