Unauthenticated user not able to check out

Hello,

Thanks for the great module, I'm new to FoxyCart but am looking forward to using it with Drupal.

As an unauthenticated user, I was getting a 'permission denied' error when trying to check out, and it looks like it was happening due to the access arguments set up for the foxycart/sso path. See my comments and modification here:

$items['foxycart/sso'] = array(
	'title' => 'Foxycart SSO',
 	'type' => MENU_CALLBACK,
	'description' => 'Process Foxycart SSO',
	'page callback' => 'foxycart_process_sso', 
    /* FIXME:(jc) Why check for permission of 'sso'?  It's not listed in the foxycart_perm() fn, so I'm not sure how else you'd grant access to it? */
    /* Setting access callback to TRUE, since I want unauthenticated users to be able to shop/checkout */
    'access callback' => TRUE,
	//'access arguments' => array(1)
    );

Also, it seems a little confusing on the settings for the module that I must enable SSO in order to allow unauthenticated users the ability to use the shopping cart. I expected that I could turn off SSO and only use the module to integrate FoxyCart and use only their authentication mechanism.

Thanks!
Jared