Could not find schema information for the element 'rewriter'. C:\...\ASPtest\Web.config

Could not find schema information for the attribute 'configSource'. C:\...\ASPtest\Web.config

<?xml version="1.0"?>
<!--  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433  -->
<configuration>
  <configSections>
    <section name="rewriter" type="Intelligencia.UrlRewriter.Configuration.RewriterConfigurationSectionHandler, Intelligencia.UrlRewriter" requirePermission="false"/>
  </configSections>
  <connectionStrings configSource="db.config"/>
  <rewriter configSource="URLRewriter.config"/>
  <appSettings configSource="app.config"/>
  <system.web>
    <customErrors mode="On" defaultRedirect="error.aspx">
      <error statusCode="403" redirect="403.aspx"/>
      <error statusCode="404" redirect="404.aspx"/>
    </customErrors>
    <compilation defaultLanguage="c#" debug="true" strict="false" explicit="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
        <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
        <add assembly="System.ServiceModel.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
      </assemblies>
    </compilation>
    <authentication mode="Forms">
      <forms loginUrl="~/Account/Login.aspx" name=".YAFNET_Authentication" protection="All" timeout="43200" cookieless="UseCookies"/>
    </authentication>
    <membership defaultProvider="YafMembershipProvider" hashAlgorithmType="SHA1">
      <providers>
        <clear/>
        <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/"/>
        <clear/>
        <add connectionStringName="yafnet" applicationName="YetAnotherForum" name="YafMembershipProvider" requiresUniqueEmail="true" useSalt="true" type="YAF.Providers.Membership.YafMembershipProvider"/>
      </providers>
    </membership>
    <profile enabled="true" defaultProvider="YafProfileProvider">
      <providers>
        <clear/>
        <add connectionStringName="yafnet" applicationName="YetAnotherForum" name="YafProfileProvider" type="YAF.Providers.Profile.YafProfileProvider"/>
        <clear/>
        <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/>
      </providers>
    </profile>
    <roleManager enabled="true" defaultProvider="AspNetSqlRoleProvider">
      <providers>
        <clear/>
        <add connectionStringName="yafnet" applicationName="YetAnotherForum" name="YafRoleProvider" type="YAF.Providers.Roles.YafRoleProvider"/>
        <clear/>
        <add name="AspNetSqlRoleProvider" type="System.Web.Security.SqlRoleProvider" connectionStringName="ApplicationServices" applicationName="/"/>
        <add name="AspNetWindowsTokenRoleProvider" type="System.Web.Security.WindowsTokenRoleProvider" applicationName="/"/>
      </providers>
    </roleManager>
    <pages validateRequest="false" smartNavigation="false" controlRenderingCompatibilityVersion="4.0" clientIDMode="AutoID">
      <controls>
        <!-- Default: use non-dynamic (compiled classes) in YAF -->
        <add tagPrefix="YAF" namespace="YAF.Controls" assembly="YAF.Controls"/>
        <add tagPrefix="YAF" namespace="YAF.Controls.Statistics" assembly="YAF.Controls"/>
        <add tagPrefix="YAF" namespace="YAF.Classes"/>
        <add tagPrefix="YAF" namespace="YAF"/>
        <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      </controls>
      <namespaces/>
    </pages>
    <httpHandlers>
      <remove verb="*" path="*.asmx"/>
      <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
      <add verb="GET" path="Resource.ashx" type="YAF.YafResourceHandler, YAF"/>
    </httpHandlers>
    <httpModules>
      <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="YafTaskModule" type="YAF.Core.YafTaskModule, YAF.Core"/>
      <add name="UrlRewriter" type="Intelligencia.UrlRewriter.RewriterHttpModule,Intelligencia.UrlRewriter"/>
    </httpModules>
  </system.web>
  <location path="login_db-protected.aspx">
    <system.web>
      <authorization>
        <deny users="?"/>
      </authorization>
    </system.web>
  </location>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
    <validation validateIntegratedModeConfiguration="false"/>
  </system.webServer>
  <system.net>
    <mailSettings>
      <smtp configSource="mail.config"/>
    </mailSettings>
  </system.net>
  <system.web>
    <trace enabled="false"/>
    <xhtmlConformance mode="Transitional"/>
    <!--  GLOBALIZATION
    This section sets the globalization settings of the application. 
    Utf-8 is not supported on Netscape 4.x 
    If you need Netscape compatibility leave iso-8859-1.
    UTF-8 is recommended for complex languages    -->
    <globalization culture="en-US" uiCulture="en" requestEncoding="UTF-8" responseEncoding="UTF-8" fileEncoding="UTF-8"/>
    <!--<globalization culture="en-US" uiCulture="en"  fileEncoding="iso-8859-1" requestEncoding="iso-8859-1" responseEncoding="iso-8859-1"/>-->
    <!-- Set debug to "true" to test out the system in development -->
  </system.web>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules>
      <remove name="ScriptModule"/>
      <remove name="YafTaskModule"/>
      <remove name="UrlRewriter"/>
      <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="YafTaskModule" type="YAF.Core.YafTaskModule, YAF.Core" preCondition="managedHandler"/>
      <add name="UrlRewriter" type="Intelligencia.UrlRewriter.RewriterHttpModule,Intelligencia.UrlRewriter" preCondition="managedHandler"/>
    </modules>
    <handlers>
      <remove name="WebServiceHandlerFactory-Integrated"/>
      <remove name="ScriptHandlerFactory"/>
      <remove name="ScriptHandlerFactoryAppServices"/>
      <remove name="ScriptResource"/>
      <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
      <add name="YafHandler" preCondition="integratedMode" verb="GET" path="Resource.ashx" type="YAF.YafResourceHandler, YAF"/>
    </handlers>
  </system.webServer>
</configuration>

The 'rewriter' element is not declared. C:\...\ASPtest\UrlRewriter.config

<rewriter>
	<rewrite url="^~/(.+?)?yaf_login?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=login&amp;$5" processing="stop" />
	<rewrite url="^~/(.+?)?yaf_info?\.aspx\?i=([0-9]+?)&amp;url\=(.+)$" to="~/$1Forum.aspx?g=info&amp;i=$2&amp;url=$3" processing="stop" />
	<rewrite url="^~/(.+)?yaf_topics([0-9]+)p([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=topics&amp;f=$2&amp;p=$3&amp;$7" processing="stop" />
	<rewrite url="^~/(.+)?yaf_topics([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=topics&amp;f=$2&amp;$6" processing="stop" />
	<rewrite url="^~/(.+)?yaf_forum([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=forum&amp;c=$2&amp;$6" processing="stop" />
	<rewrite url="^~/(.+)?yaf_postst([0-9]+)p([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=posts&amp;t=$2&amp;p=$3&amp;$7" processing="stop" />
	<rewrite url="^~/(.+)?yaf_postst([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=posts&amp;t=$2&amp;$6" processing="stop" />
	<rewrite url="^~/(.+)?yaf_postsm([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=posts&amp;m=$2&amp;$6" processing="stop" />
	<rewrite url="^~/(.+)?yaf_profile([0-9]+)(_([-a-z0-9]+))?\.aspx(\?(.+))?$" to="~/$1Forum.aspx?g=profile&amp;u=$2&amp;$6" processing="stop" />
	<rewrite url="^~/(.+)?yaf_([-0-9a-z_]+?)\.aspx\?(.+)?$" to="~/$1Forum.aspx?g=$2&amp;$3" processing="stop" />
	<rewrite url="^~/(.+)?yaf_([-0-9a-z_]+?)\.aspx$" to="~/$1Forum.aspx?g=$2" processing="stop" />
</rewriter>