I found you as a pro in Prestashop.
I have installed and upgraded Prestashop to the lastes versjon:
I have an error when trying to to a test to pay with Paypal.
I also have bought a ssl certificat, and want to get prestashop up and running.
At the moment I got an Internal Server Error
[Tue Apr 02 17:02:51 2013] [alert] [client [url removed, login to view]] /home/bgsalg/public_html/.htaccess: Expected but saw RewriteEngin>, referer: [url removed, login to view];token=f9fd757d80e720e7a9b4c440c107ac94
Is this something you could do?