title: UI.Component is undefined error
body: <p>This error looks like something is simply not defined.  Not sure exactly what I need to define or how.  Anybody got any ideas?</p>
  
  <pre><code>TypeError: UI.Component is undefined (
  line 132 of blaze-layout.js:  Layout = UI.Component.extend({  )
  
  Exception in defer callback: IronRouter&lt;.autoRender@http://localhost:3000/packages/iron-router.js?a4167ac4d12a73891d8a9b8c57419a347da0ee12:1579:7
  IronRouter&lt;.constructor/&lt;/&lt;@http://localhost:3000/packages/iron-router.js?a4167ac4d12a73891d8a9b8c57419a347da0ee12:1424:11
  .withValue@http://localhost:3000/packages/meteor.js?7a66be7a03504cd2c18dd47b699e6233b60675ed:793:11
  withoutInvocation/&lt;@http://localhost:3000/packages/meteor.js?7a66be7a03504cd2c18dd47b699e6233b60675ed:382:26
  Meteor.bindEnvironment/&lt;@http://localhost:3000/packages/meteor.js?7a66be7a03504cd2c18dd47b699e6233b60675ed:821:11
  onGlobalMessage@http://localhost:3000/packages/meteor.js?7a66be7a03504cd2c18dd47b699e6233b60675ed:319:11
  </code></pre>
  
  <p>Thanks in advance for any tips on sorting this!</p>