I've tried to read up on this, but the information I found only got me more confused.
PayPal refuses to work on my Magento installation. I have called their support and they told me that there is no request to the PayPal servers. So I assume the issue is local.
Does PayPal need encryption to be enabled on the server hosting the shop?
Is there anything else that could stop PayPal in its tracks before even reaching their servers?
This error is logged in
exception 'Mage_Core_Exception' with message 'PayPal NVP gateway errors: Array Correlation ID: . Version: .' in /is/htdocs/xxx/xxx/app/code/core/Mage/Paypal/Model/Api/Nvp.php:1062
This is what it tells me when I try to check out with PayPal Express:
PayPal gateway has rejected request. Method Specified is not Supported (#81002: Unspecified Method).