Feeds not working after move

I recently moved my WP set-up from one domain to another, following the instructions at Tamba2 >>http://www.tamba2.org.uk/wordpress/move/. Everything worked fine, except for my feeds. When I try and access the feed pages >>http://www.t4food.com/index.php/feed/, I get an internal server error. Is there something more I need to change to make that work?