Connection String problem in web.config!

[555336]

Hi, I was creating a login form in visual web developer express. In my web.config, I have inserted these codes for the connection of my database:

<connectionStrings>
<clear />
<add name="LocalSQLServer"
connectionString="Server=.;Database=youtubelogin;Trusted_Connection=Yes;" />
</connectionStrings>

The problem is when I add a Login control on my page, and click on the ASP.Net configuration website for the security to add roles, I got this error:

The connection name 'ApplicationServices' was not found in the applications configuration or the connection string is empty. (c:\documents and settings\ali\my documents\visual studio 2010\Projects\Youtube\Youtube\web.config line 25)

Here is my entire web.config below:

<?xml version="1.0"?>

<configuration>
<connectionStrings>
<clear />
<add name="LocalSQLServer"
connectionString="Server=.;Database=youtubelogin;Trusted_Connection=Yes;" />
</connectionStrings>

<system.web>
<compilation debug="true" strict="false" explicit="true" targetFramework="4.0" />

<authentication mode="Forms">
  <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
</authentication>

<membership>
  <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="/" />
  </providers>
</membership>

<profile>
  <providers>
    <clear/>
    <add name="AspNetSqlProfileProvider" type="System.Web.Profile.SqlProfileProvider" connectionStringName="ApplicationServices" applicationName="/"/>
  </providers>
</profile>

<roleManager enabled="false">
  <providers>
    <cl