BO 4.2 SDK sessionmgr

we just switched from BO 4.1 to 4.2 and our Java/VBA applications that used BO SDK fail to connect to any of the 4.2 servers. they work fine for 4.1 servers. does anyone know if I need to be using a different syntax for connecting to 4.2 environments? any sample code connecting to 4.2 environments would be very helpful.

here is my excel VBA code:
Set sessionManager = CreateObject("CrystalEnterprise.SessionMgr")

Set Set eSession = sessionManager.Logon(userName, password, CMS, authType) Set

iStore = eSession.Service("", "InfoStore")