Quote Originally Posted by hem View Post
The IPN mod does use notifiers though (Google Checkout doesn't). All I can think is that the mod does not call any user created classes. The problem is that debugging IPN is close to impossible.
IIRC in ZC1.3.7 the PayPal IPN Handler uses its own application_top.php file which does not load any of the auto loaders so user defined notifiers and classes will not get loaded. ZC1.3.8 uses the standard application_top so autoloaders should get loaded. I don't recall ipn_main_handler.php triggering any notifiers at the point of order creation or status update though.

The last time I had to hook into the order creation process I ended up just changing the includes/classes/order.php file. It meant changing a core file but it ensured that all orders were caught and everything was simpler.

Regards,
Christian.