PayPal API Error: No items added to this transaction. Add at least 1 item using addItem() in /home/mysteryr/public_html/ebooks/PayPal.class.php on line 430array(6) {
  ["ACK"]=>
  string(7) "Failure"
  ["L_ERRORCODE0"]=>
  string(5) "81002"
  ["L_SHORTMESSAGE0"]=>
  string(18) "Unspecified Method"
  ["L_LONGMESSAGE0"]=>
  string(33) "Method Specified is not Supported"
  ["L_SEVERITYCODE0"]=>
  string(5) "Error"
  ["REQUEST"]=>
  bool(false)
}