PayPal Website Payments Standard - Error! in Payment Modules Posted July 10, 2010 I am using PayPal Website Payments Standard V.1, oscommerce version 2.2rc2a I receive the following error on the paypal payment page: "You have requested an outdated version of PayPal. This error often results from the use of bookmarks" It does not appear every time, some orders are processed. I am not sure how long the problem has been going on but orders have been slow, and I have just noticed this. The shop has been working fine for 2 years. Has Paypal, changed something on their end? Does anyone know of a fix for this? I corrected this, the error was a result of the client trying to make the changes in the tax rates and tax zones to accommodate the new Canadian HST.