Asp.net Role Manager feature has not been enabled

Asp.net Role Manager feature has not been enabled:

Problem is, now I'm getting the configuration error 'Default Role Provider could not be found'.

How can I get around this? I just need to see if the current user exists in a specific domain group.

Role Manager feature:

<configuration>
    <system.web>
        <roleManager enabled="true" />
    </system.web>
</configuration>

<roleManager>
   <providers>
      <add name="AspNetSqlRoleProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Security.SqlRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
        <add name="AspNetWindowsTokenRoleProvider" applicationName="/" type="System.Web.Security.WindowsTokenRoleProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /> 
   </providers>
</roleManager>