title: How to resolve nested conflicting web.config entries on sub web applications?
body: <p>I am trying to run a standard SubText blog engine as a sub application to a standard MS MVC website.  The Web.configs have conflicting entries.  I know there is some way to limit the scope of these entries in the web.config, but I have yet to make it work.  Any ideas?  I tried using a <code>&lt;location&gt;</code> tag but it cannot exist at a root xml level.  Trying to use <code>&lt;remove&gt;</code> statements seem to be simply ignored.  The details:</p>
  
  <p>The sub app error:</p>
  
  <p><code>Section or group name 'system.web.extensions' is already defined. Updates to this may only occur at the configuration level where it is defined.</code></p>
  
  <p>The sub app code: </p>
  
  <pre><code>&lt;sectionGroup name="system.web.extensions"
  type="System.Web.Configuration.SystemWebExtensionsSectionGroup, 
  System.Web.Extensions, Version=1.0.61025.0, 
  Culture=neutral, PublicKeyToken=31bf3856ad364e35"&gt;
  </code></pre>
  
  <p>The parent app code:</p>
  
  <pre><code>&lt;sectionGroup name="system.web.extensions"
  type="System.Web.Configuration.SystemWebExtensionsSectionGroup, 
  System.Web.Extensions, Version=3.5.0.0, 
  Culture=neutral, PublicKeyToken=31BF3856AD364E35"&gt;`
  </code></pre>