Fix redirect loop error when enabling SSL https on wp-ecommerce
One “cool” thing from wp-ecommerce 
as usual..
my client want to enable SSL on wp-ecommerce shopping cart.
I have read talkspam and instinct forum and apply their tutorial.. but unfortunately when accessing https:// url, my browser says that there is redirect loop. it seem because of canonical url redirect function from wordpress.
- Install SSL on your server
- Install the HTTPS for WordPress plugin.
- From your WP Admin panel, select e-Commerce | Settings | Admin | URL Settings section, make sure your URL settings contain https://
wp-ecommerce-ssl
- In the WP Admin panel, select Settings -> General change wordpress and blog address contain https://
- the last important thing, install plugin from Mark Jaquith or being simple just add
remove_filter('template_redirect', 'redirect_canonical');
insert that script in functions.php file at your theme folder.
hope it save your time for finding bugs on the field.
there’s also a hack for this at:
http://www.propellingsolutions.com/2009/12/securing-a-wordpress-page-with-https/