SiteMapPath Control

Well, I'd need more information, could you post your web.config file here, as it is most likely there the problem lies.

<?xml version="1.0"?>
<!-- Note: As an alternative to hand editing this file you can use the web admin tool to
       configure settings for your application. Use the Website->Asp.Net Configuration option
       in Visual Studio.
     A full list of settings and comments can be found in machine.config.comments usually
     located in \Windows\Microsft.Net\Frameworks\v2.x\Config -->
<configuration>
  <!--
    Mode defines certain feature availability:
      Full: No restrictions
      Real: Runs as if a real site, without the view code, download and user/role view links
  -->
  <appSettings>
    <add key="mode" value="Full" />
  </appSettings>
 
      <!--
            define the connection string to the database
      -->
  <connectionStrings>
     <add name="WroxUnited"
           connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|WroxUnited.mdf;Integrated Security=True;User Instance=True"
           providerName="System.Data.SqlClient" />
  </connectionStrings>

  <system.web>
   
    <httpModules>
      <add name="Page" type="Wrox.Web.GlobalEvents.ThemeModule" />
    </httpModules>

    <!--
            Set compilation debug="true" to insert debugging symbols into the compiled page.
            Because this affects performance, set this value to true only during development.
        -->
    <compilation debug="true">
    </compilation>
    <!--
                  Set forms authentication and define the login page
            -->
    <authentication mode="Forms">
      <forms loginUrl="Default.aspx" />
    </authentication>
    <!--
                  Enable the role manager
                  This controls access to pages and the visibility of certain menu items
            -->
    <roleManager enabled="true"/>
    <anonymousIdentification enabled="true"/>
    <!--
            The <customErrors> section enables configuration of what to do if/when an unhandled
            error occurs during the execution of a request.  Specifically, it enables developers
            to configure html error pages to be displayed in place of a error stack trace.
        -->

            <customErrors mode="RemoteOnly">
      <error statusCode="404" redirect="missingPage.aspx"/>
            </customErrors>

    <!--
                  Redefine the Site Map Provider, to add the security trimming attribute,
                  which is off by default
            -->
    <siteMap defaultProvider="AspXmlSiteMapProvider" enabled="true">
      <providers>
        <clear/>
        <add name="AspXmlSiteMapProvider" type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
          siteMapFile="web.sitemap" securityTrimmingEnabled="true"/>
      </providers>
    </siteMap>

    <!--
                  Define the SMTP Mail server settings
                  Required for the PasswordRecovery control (and possibly mailshots)
            <smtpMail from="admin@wroxunited.com" serverName="your_smtp_server">
                  <fields>
                  </fields>
            </smtpMail>
            -->
    <!--
                  Define the user profile properties
            -->
    <profile enabled="true">
      <properties>
        <add name="MemberName"/>
        <add name="Name"/>
        <add name="Address"/>
        <add name="City"/>
        <add name="County"/>
        <add name="PostCode"/>
        <add name="Country"/>
        <add name="Mailings" type="System.Boolean"/>
        <add name="Email"/>
        <add name="Theme"/>
        <add name="Cart" serializeAs="Binary" type="Wrox.Commerce.ShoppingCart" allowAnonymous="true"/>
      </properties>
    </profile>

  </system.web>
</configuration>