[Plugin: Force User Login] Keeps Looping to Login Page

Let’s add some more information because I keep running into the same problem, no matter which privacy plug-in I try. I’ve tried to install Force User Login, Private! wordpress Access Control Manager, and Private Only. The index.php is in an odd root directory with the following –

define('WP_USE_THEMES', true);

/** Loads the WordPress Environment and Template */
require('./wp/wp-blog-header.php');
?>

And the rest of the wordpress installation is in /wp.

I think the reason these privacy plug-ins aren’t working is because wordpress is installed in the /wp directory. Force User appears to be the simplest system and I’ve tried all sorts of modifications to the redirect but nothing works properly. Here’s the code –

add_action( 'template_redirect', 'force_login' );

	function force_login() {
		$redirect_to = $_SERVER['REQUEST_URI']; // Change this line to change to where logging in redirects the user, i.e. '/', '/wp-admin', etc.

		if ( ! is_user_logged_in() ) {
			if ( is_feed() ) {
				$credentials = array();
				$credentials['user_login'] = $_SERVER['PHP_AUTH_USER'];
				$credentials['user_password'] = $_SERVER['PHP_AUTH_PW'];

				$user = wp_signon( $credentials );

				if ( is_wp_error( $user ) ) {
					header( 'WWW-Authenticate: Basic realm="' . $_SERVER['SERVER_NAME'] . '"' );
					header( 'HTTP/1.0 401 Unauthorized' );
					die();
				}
			}
			else {
		  		header( 'Location: ' . get_site_url() . '/wp-login.php?redirect_to=' . $redirect_to );
				die();
			}
	  	}
	}

I have a lot more experience modifying Joomla systems and I’m feeling pretty lost with this problem, even though it should be really simple to fix.

Suggestions? I’ll be happy with a “Hey, dummy – here’s the solution…” (I am so tired of fiddling with this!!)

Thanks, Deb