Hi
Trying to go live, testing the cart. I wold like to use IPN, and the test seems to be working, I get an instant email etc, but on the site, when I continue to go on to confirmation, the following comes up :-

Warning: Cannot modify header information - headers already sent by (output started at /home/huskyzco/public_html/catalog/includes/modules/payment/paypalipn.php:156) in /home/huskyzco/public_html/catalog/includes/functions/general.php on line 29

Have looked at all IPN entries in forum, but this seems to be unique so far... can anyone help?

Kind regards
Kim