Usinging Zencart 151, Paypal Pro.

Just activated Free Shipping Module. Paypal charged shipping and we are getting this message:

Dear store owner,
An error occurred when attempting to initiate the payment-validation
transaction. As a courtesy, only the error "number" was shown to your
customer. The details of the error are shown below.

81002
Unspecified Method
Method Specified is not Supported





Zen Cart message: 81002 [] Unspecified Method - Method Specified is not
Supported



Problem occurred while customer 7 Beth was attempting checkout with PayPal
Website Payments Pro.

Transaction Response Details: Array
(
[ACK] => Failure
[L_ERRORCODE0] => 81002
[L_SHORTMESSAGE0] => Unspecified Method
[L_LONGMESSAGE0] => Method Specified is not Supported
[L_SEVERITYCODE0] => Error
[CURL_ERRORS] =>
)


Followed by Transaction Submission: Array which had customer order info.

Thanks.