Joomshopping is a great e-commerce component, but support is provided mainly in german language.

I had some problems trying to configurate the paypal payment, because after the payment the order status wasn't updated automatically, and this, in case of downloadable products, means that the customer doesn't receive the download link orthe possibility to download the product he paid for.

Joomla 1.7 installation and Joomshopping version 3.2.7, i found out that to make it work, you need to:

1) activate IPN in paypal account and set http://YOURDOMAIN.COM/index.php?option=com_jshopping&controller=checkout&task=step7&act=notify&js_paymentclass=pm_paypal&no_lang=1  as "notification page";

2) correct the last line of code of the file pm_paypal.php you find in JOOMLADIRECTOY/components/com_jshopping/payments/pm_paypal/  , where "$params['checkReturnParams'] = $pmconfigs['checkdatareturn'];return $params;}}?>" got to be "$params['checkReturnParams'] =0; $pmconfigs['checkdatareturn'];return $params;}}?>"

3) the component DOESN'T WORK correctly in Paypal Sandbox, so you got to try it with test mode off!