I am getting this error when I run the web application
<p>I am getting error when I run the application,</p>

<blockquote>
  <p>Could not load file or assembly
  'System.Web.Extensions,
  Version=1.0.61025.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35' or
  one of its dependencies. The system
  cannot find the file specified.</p>
</blockquote>

<p>This is the error I am getting  when I run the application, I added the new dll and increased the trust level. Can you help me please.</p>
