Has anyone used the CI-Merchant library for PayPal?

Has anyone used the CI-Merchant library for PayPal? - Printable Version

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Has anyone used the CI-Merchant library for PayPal? - El Forum - 03-22-2012

[eluser]Unknown[/eluser]
The example given on the github page is extremely bare, and when I copy it, just returns a blank screen. Has anyone used it, or can anyone provide a more concrete example of what this would look like? I'm using the CodeIgniter Cart class, btw.

Cheers.

Has anyone used the CI-Merchant library for PayPal? - El Forum - 04-18-2012

[eluser]Unknown[/eluser]
I'm having the same problems.
After getting the white screen I added

Code:
ini_set('display_errors',1);

and saw that it needed the language helper, so I added that with

Code:
$this->load->helper('language');

.
Now I'm getting an error: Missing argument 1 for Merchant::purchase_return().
I'm not even sure if I should be calling this as the comment mentions hosted payment gateways only?