title: The base class includes the field 'Head1', but its type is not compatible
body: <p>I have a web application, it's showing a below error :- </p>
  
  <blockquote>
    <p>The base class includes the field 'Head1', but its type
    (HimalayanCraft.head) is not compatible with the type of control
    (ASP.usercontrols_head_ascx).</p>
  </blockquote>