Shortcodes

I can't seem to get my shortcode to work on the registration page. http://wpsitebuilder.net/registration/ what am i missing? I did try using a different, simple template and nothing... I have read and re-read the installation instructions maybe a dozen times and still haven't really caught anything that could be causeing that. I created memberships, subscriptions, levels, picked a gateway, added the rules to the levels, activated everything... and nothing. Please help?

Additionally, this is showing up now on my old signup page:

Warning: Invalid argument supplied for foreach() in /home/wpsitebu/public_html/wp-content/plugins/membership/membershipincludes/includes/default.rules.php on line 1068

Warning: Invalid argument supplied for foreach() in /home/wpsitebu/public_html/wp-content/plugins/membership/membershipincludes/includes/default.rules.php on line 1068