Thanks Jason Thats worked fine.
On the checkout page, when I click 'confirm' it opens up the wrong address
instead of
https://www.paypal.com/checkoutnow?token
it opens up
http://www.domainname.com/https://www.paypal.com/checkoutnow?token
Have tried adjusting the PP_ECO_PHP.php page but no joy with that. What do I need to change to get the right path used please?
UPDATE: now the page redirects to the checkout_failure page.....