أين الخطأ في هذا الكود .. - نسخة قابلة للطباعة

كود :
<?xml version="1.0"?>

<configuration>

    <configSections>

        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >

            <section name="WedHalls.My.MySettings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />

        </sectionGroup>

    </configSections>

    <connectionStrings>

        <add name="WedHalls.My.MySettings.WedHallsConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\aw\Desktop\WedHallss\WedHalls\WedHalls\WedHalls.mdf;Integrated Security=True;Connect Timeout=30;User Instance=False"

            providerName="System.Data.SqlClient" />

        <add name="WedHalls.My.MySettings.Database2ConnectionString"

            connectionString="Data Source=|DataDirectory|\Database2.sdf"

            providerName="Microsoft.SqlServerCe.Client.4.0" />

    </connectionStrings>

    <system.diagnostics>

        <sources>

            <!-- This section defines the logging configuration for My.Application.Log -->

            <source name="DefaultSource" switchName="DefaultSwitch">

                <listeners>

                    <add name="FileLog"/>

                    <!-- Uncomment the below section to write to the Application Event Log -->

                    <!--<add name="EventLog"/>-->

                </listeners>

            </source>

        </sources>

        <switches>

            <add name="DefaultSwitch" value="Information"/>

        </switches>

        <sharedListeners>

            <add name="FileLog" type="Microsoft.VisualBasic.Logging.FileLogTraceListener, Microsoft.VisualBasic, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" initializeData="FileLogWriter"/>

            <!-- Uncomment the below section and replace APPLICATION_NAME with the name of your application to write to the Application Event Log -->

            <!--<add name="EventLog" type="System.Diagnostics.EventLogTraceListener" initializeData="APPLICATION_NAME"/> -->

        </sharedListeners>

    </system.diagnostics>

  <appSettings>

    <add key="WedHallsConn" value="Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\aw\Desktop\WedHallss\WedHalls\WedHalls\WedHalls.mdf;Integrated Security=True;Connect Timeout=30;User Instance=False"/>

    <add key="LogFileName" value="WedHalls.txt"/>

    <add key="LogPath" value="C:\cLogs\WedHalls\"/> 



  </appSettings>

<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup><userSettings>

    <WedHalls.My.MySettings>

      <setting name="day" serializeAs="String">

        <value />

      </setting>

      <setting name="month" serializeAs="String">

        <value />

      </setting>

      <setting name="year" serializeAs="String">

        <value />

      </setting>

      <setting name="checked" serializeAs="String">

        <value>False</value>

      </setting>

    </WedHalls.My.MySettings>

  </userSettings>

</configuration>