title: The tag 'Bootstrapper' does not exist in XML namespace 'clr-namespace:XXX'
body: <p>I got the following app.xml:</p>
  
  <pre><code>&lt;Application 
      x:Class="WeDoneIt.WP2.App"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:local="clr-namespace:WeDoneIt.WP2"
      xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
      xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"&gt;
  
      &lt;Application.Resources&gt;
          &lt;local:Bootstrapper x:Key="bootstrapper" /&gt;
      &lt;/Application.Resources&gt;
  &lt;/Application&gt;
  </code></pre>
  
  <p>And the bootstrapper:</p>
  
  <pre><code>namespace WeDoneIt.WP2
  {
      public class Bootstrapper : Caliburn.Micro.Autofac.AutofacBootstrapper
      {
          public Bootstrapper()
          {
              Instance = this;
          }
  
          protected static Bootstrapper Instance { get; private set; }
  
          protected override void ConfigureContainer(ContainerBuilder builder)
          {
              builder.RegisterType&lt;ShellViewModel&gt;();
              builder.RegisterType&lt;ItemViewModel&gt;();
  
              base.ConfigureContainer(builder);
          }
  
          public static T ResolveModel&lt;T&gt;() where T : INotifyPropertyChangedEx
          {
              return (T)Instance.GetInstance(typeof (T), null);
          }
      }
  }
  </code></pre>
  
  <p>Why can it not find it?</p>