Update in Paypal's Backend
21st April 2001 by Harald Ponce de LeonIn CVS, paypal's payment module has been updated with some changes made recently in paypal's backend.
For those of you using 2.1 heres how to fix it:
Edit the file catalog/includes/modules/payment/paypal.php.
Look for the line with https://secure.paypal.com
Change the bit: