Hello,
I seem to be having a problem when going through the checkout process, after selecting paypal as the method, (paypal being the only method enabled in admin panel) I end up on the following page:
https://www.worldclassads.com/classifieds/add-listing/checkout.html
with the following error message: This page isn't working www.worldclassads.com is unable to handle this request.
HTTP ERROR 500