Error when processing card

[jenf]

Hi,

First off thank you for creating such a powerful product.

I am having troubles with the credit card process. I have all of my information, API ID and transaction key, entered in correctly. I have VirtueMart on live mode and Authorize.net in test mode. I have another application that is using Authorize.net and it is working great. However I am getting this error when I make a payment to test it.

Error: The Credit Card Number entered is not valid.

I am entering valid credit card numbers. I have spoken with Authorize,net and they said that it is an issue with the shopping cart. Can anyone help me with this?

Thanks,
Jen