Membership Provider Connection string for Active Directory Lightweight Directory Services (ADLDS)

I am attempting to set up my Active Directory Membership Provider to connect to ADLDS (Active Directory Lightweight Directory Services) and I am using the following connection string:
<add name="ADConnectionString" connectionString="LDAP://MyServer:389/CN=MyPartition,DC=ADLDS,DC=com" /> My membership configuration is the following:
<membership defaultProvider="ADMembershipProvider"> <providers> <clear /> <add name="ADMembershipProvider" type="System.Web.Security.ActiveDirectoryMembershipProvider" connectionStringName="ADConnectionString" attributeMapUsername="sAMAccountName" connectionUsername="mydomain\adldsconnection" connectionPassword="myPassw0rd!" /> </providers> </membership> When I attempt to connect to ADLDS, however, ...