paypal invalid ipn

[eluser]spheroid[/eluser]
You have this in your form:

Code:

$this->paypal_lib->add_field(’notify_url’, base_url().’index.php/paypal/ipn’); // <-- IPN url

...but your function is actually called

Code:

function validate_ipn()

Try changing your form line to:

Code:

$this->paypal_lib->add_field(’notify_url’, base_url().’index.php/paypal/validate_ipn’); // <-- IPN url