Problem deploying an ASP.NET site
<p>I have written my ASP.NET web site code in Visual Studio 2008. When I'm uploading it to the remote server I'm getting an error message about a problem in the web configuration file:</p>

<blockquote>
  <p>Section or group name 'system.web.extensions' is already defined.Updates to this may occur at the configuration level where it is defined.</p>
</blockquote>

<p>What is the reason for this error and what can be done to fix it?</p>

<p>I am new to ASP.NET.</p>
