title: Sitecore "Uncaught ReferenceError: MultilistWithSearch is not defined"
body: <p>We are in the process of migrating a customers website from sitecore 7 to sitecore 8.1 initial release.</p>
  
  <p>We have created packages that contain the items from the sitecore 7 instance and installed these packages on the sitecore 8.1 instance.</p>
  
  <p>Now on some items we get the following console error when we click on the node:</p>
  
  <blockquote>
    <p>Uncaught ReferenceError: MultilistWithSearch is not defined</p>
  </blockquote>
  
  <p>Has anyone got an idea how we got this error and how we can solve it?</p>
  
  <p>It's really anoying because once you've got this error alot of the actions (like clicking the right mouse button on an item) show the message:</p>
  
  <blockquote>
    <p>Please wait while the Content Editor is loading</p>
  </blockquote>