Meteor.js + iron-router: which version should I use and how should I install it?

Question

So the iron-router github page says this:

Latest Version: 0.8.2

IMPORTANT: Do not install versions 0.9.0 or 0.9.1 from Atmosphere. These versions are intended for the new Meteor packaging system available in Meteor v0.9.0. iron-router 0.9.x was released by mistake to Atmosphere.

When I run meteor list in my project directory I get this:

standard-app-packages  1.0.1  Moved to meteor-platform
iron:router            0.9.3  Routing specifically designed for Meteor
d3                     1.0.0  Library for manipulating documents based on data
less                   1.0.8  The dynamic stylesheet language
accounts-password      1.0.1  Password support for accounts
jquery                 1.0.0  Manipulate the DOM using CSS selectors
http                   1.0.5  Make HTTP calls to remote servers

meteor --version shows me this:

Meteor 0.9.2.2

I installed iron-router, according to the instruction on the same github page that the above quote is taken from, as follows:

meteor add iron:router

When I run my app I'm being give the following error message in the browser console:

No Iron.Layout found so you can't use yield! 

My layout template looks like this:

<template name='advantage_layout'>
    <div id='advantage-nav'>
        <div id='user-control'>
            <div id='brand-username'>
                Advantage: {{username}}
            </div>
            <div id='user-buttons'>
                <button id='settings-button' class='user-button'>Settings</button>
                <button id='logout-button' class='user-button'>Logout</button>
            </div>
        </div>
        {{>nav}}
    </div>

    <div id='advantage-content'>
        {{> yield}}
    </div>
</template>

I configure the router like this:

var mustBeSignedIn = function(pause) {
    if (!Meteor.user()) {
        // render the login template but keep the url in the browser the same
        this.render('login');
        // pause this rendering of the rest of the before hooks and the action function 
        pause();
    }
}

// this hook will run on almost all routes
Router.onBeforeAction(mustBeSignedIn, {except: ['login']});

Router.configure({
    loadingTemplate: 'loading',
    layoutTemplate: 'advantage_layout'
})

Router.map(function() {
    this.route('user_settings', {
        path: 'user-settings/',
        layoutTemplate: 'advantage_layout',
        template: 'user_settings',
    });
});

Help.