petshop4.0的数据库配置问题（高分酬谢）

提示：在应用程序配置中未找到连接名“LocalSqlServer”或者连接字符串为空。源：machine.config
　　　问题出在涉及到成员角色管理的页面checkout.aspx,newuser.aspx．．．
以前安装后后，解密web.config,运行build.bat就能运行的，但是后来改动machine.config和web.config出现这个问题。
machine.config相关配置如下：
<section name="connectionStrings" type="System.Configuration.ConnectionStringsSection, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" requirePermission="false" />
 <connectionStrings>
    <add name="LocalSqlServer" connectionString="datasource=./SQLExpress;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|aspnetdb.mdf;User Instance=true;" providerName="System.Data.SqlClient" />
  </connectionStrings>
 <membership>
      <providers>
        <add name="AspNetSqlMembershipProvider" type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="LocalSqlServer" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="true" applicationName="/" requiresUniqueEmail="false" passwordFormat="Hashed" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="7" minRequiredNonalphanumericCharacters="1" passwordAttemptWindow="10" passwordStrengthRegularExpression="" />
      </providers>
    </membership>
    <profile>
      <providers>
        <add name="AspNetSqlProfileProvider" connectionStringName="LocalSqlServer" applicationName="/" type="System.Web.Profile.SqlProfileProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
      </providers>
    </profile>
petshop4.0相关配置如下：<connectionStrings>
   <add name="SQLProfileConnString" connectionString="server=TP;database=MSPetShop4Profile;user id=mspetshop;password=pass@word1;min pool size=4;max pool size=4;"
   providerName="System.Data.SqlClient" />
  <add name="SQLMembershipConnString" connectionString="server=TP;database=MSPetShop4Services;user id=mspetshop;password=pass@word1;min pool size=4;max pool size=4;"
   providerName="System.Data.SqlClient" />
  <add name="SQLConnString1" connectionString="server=TP;database=MSPetShop4;user id=mspetshop;password=pass@word1;min pool size=4;max pool size=4;"
   providerName="System.Data.SqlClient" />
  <add name="SQLConnString2" connectionString="server=TP;database=MSPetShop4;user id=mspetshop;password=pass@word1;max pool size=4;min pool size=4;"
   providerName="System.Data.SqlClient" />
  <add name="SQLConnString3" connectionString="server=TP;database=MSPetShop4Orders;user id=mspetshop;password=pass@word1;min pool size=4;max pool size=4;"
   providerName="System.Data.SqlClient" />
</connectionStrings>
<profile automaticSaveEnabled="false" defaultProvider="ShoppingCartProvider">
<providers>
<add name="ShoppingCartProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
<add name="WishListProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
<add name="AccountInfoProvider" connectionStringName="SQLProfileConnString" type="PetShop.Profile.PetShopProfileProvider" applicationName=".NET Pet Shop 4.0"/>
</providers>
<properties>
<add name="ShoppingCart" type="PetShop.BLL.Cart" allowAnonymous="true" provider="ShoppingCartProvider"/>
<add name="WishList" type="PetShop.BLL.Cart" allowAnonymous="true" provider="WishListProvider"/>
<add name="AccountInfo" type="PetShop.Model.AddressInfo" allowAnonymous="false" provider="AccountInfoProvider"/>
</properties>
</profile><membership defaultProvider="SQLMembershipProvider">
<providers>
<add name="SQLMembershipProvider" type="System.Web.Security.SqlMembershipProvider" connectionStringName="SQLMembershipConnString" applicationName=".NET Pet Shop 4.0" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" passwordFormat="Hashed"/>
</providers>
</membership>问题就这样，希望各位帮忙解决以下。