Paypal is not working with JGive. Please help!

IN testing my site prior to today's launch I received the following error message.

We cannot process this transaction because there is a problem with the PayPal email address supplied by the seller. Please contact the seller to resolve the problem. If this payment is for an eBay listing, you can contact the seller via the "Ask Seller a Question" link on the listing page. When you have the correct email address, payment can be made at http://www.paypal.com.

Can someone please help me with this issue? Any assistance would be much appreciated.

Thanks in advance.