RE: set profile property not work .error:The settings property 'NameFamily' was not found

i setting profile in web config like this:
 <profile defaultProvider="AspNetSqlProfileProvider" enabled="true">
      <providers>
        <clear/>
        <add name="AspNetSqlProfileProvider"
             connectionStringName="PersonalConnectionString"
             applicationName="/"
             type="System.Web.Profile.SqlProfileProvider, System.Web,Version=4.0.0.0, Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a"/>
      </providers>
    &nbs ...