I don't have ";" in the end of the connection string.
But the Links still warning me:

Error: Edit Links is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: Value cannot be null. Parameter name: connectionString ---> System.ArgumentNullException: Value cannot be null. Parameter name: connectionString at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteScalar(String connectionString, String spName, Object[] parameterValues) at DotNetNuke.Modules.Links.SqlDataProvider.AddLink(Int32 ModuleId, Int32 UserId, String Title, String Url, String ViewOrder, String Description) at DotNetNuke.Modules.Links.LinkController.AddLink(LinkInfo objLink) at DotNetNuke.Modules.Links.EditLinks.cmdUpdate_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---

The connection string followed:

  <connectionStrings>
    <!-- Connection String for SQL Server 2000/2005   -->
    <add name="SiteSqlServer" connectionString="Data Source=sqlsrv;Initial Catalog=DotNetNuke;User ID=DotNetNukeAdm;password=123abc" providerName="System.Data.SqlClient" />
  </connectionStrings>
  <appSettings>
    <!-- Connection String for SQL Server 2000/2005 - kept for backwards compatability - legacy modules    -->
    <add key="Server=sqlsrv;Database=DotNetNuke;uid=DotNetNukeAdm;pwd=123,abc" />
   <add key="InstallTemplate" value="DotNetNuke.install.config" />
    <add key="AutoUpgrade" value="true" />
    <add key="UseInstallWizard" value="true" />
    <add key="InstallMemberRole" value="true" />
    <add key="ShowMissingKeys" value="false" />
    <add key="EnableWebFarmSupport" value="false" />
    <add key="EnableCachePersistence" value="false" />
    <add key="HostHeader" value="" />
    <!-- Host Header to remove from URL so "www.mydomain.com/johndoe/Default.aspx" is treated as "www.mydomain.com/Default.aspx" -->
    <add key="RemoveAngleBrackets" value="false" />
    <!--optionally strip angle brackets on public login and registration screens-->
    <add key="PersistentCookieTimeout" value="0" />
    <!--use as persistent cookie expiration. Value is in minutes, and only active if a non-zero figure-->
    <!-- set UsePortNumber to true to preserve the port number if you're using a port number other than 80 (the standard)
    <add key="UsePortNumber" value="true" /> -->
    <add key="InstallationDate" value="4/27/2008" />
  </appSettings>

I don't know where is wrong.
Thanks for any help!

your passwords don't match

the next version of the module will use the core connectionstring

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