Hi,
You don't need to add a virtual host to /etc/httpd/conf/httpd.conf
only:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}
The rest should remain exactly the same as before. Then, reload Apache and it should be fine.
If not, then run:
# curl -I -v kalturassl.servcast.net
and paste the output.
Thanks,