Upgraded to HTTPS 3.2 and got locked out. Forced a reset. When back in I reset the SSL Host. SSL and non SSL pages display OK.
Turned on 'Force SSL Administration' and get white screen with no errors. Attempt to access any page gets 500.
Uninstalled, reinstalled, same problem when 'Force SSL Administration' turned on.
Log file shows lots of occurrances of...
[Sun Oct 07 17:49:26 2012] [warn] mod_fcgid: stderr: PHP Fatal error: Call to undefined function is_user_logged_in() in ...removed.../wp-content/plugins/wordpress-https/lib/WordPressHTTPS/Module/Core.php on line 348
Back at 3.1.2 and working OK.