Drupal 7 with SSL

Hi,

We're just moving our (currently working) site over to https and having a few issues.
When logging in via amember on http:// all single sign on working fine, however, on https:// the login is not working.

After some digging we noticed that while an sid is being set in the Drupal sessions table, an ssid (secure session id) is only set when logging into Drupal itself and not via amember.

I wonder if this section of code in the drupal plugin is to blame:

Code:

if ($this->getConfig('version') >= 7)
            $config[Am_Protect_SessionTable::FIELDS_ADDITIONAL] = array('ssid' => '');