Win-Pak PRO International and XP2

Win-Pak PRO International -Release 3 Build 432-, an Access Control software (by Northern Computers Inc) has fatal error in those PC?s running the user?s interface application, after upgrading from Windows XP SP1 to SP2. Win-Pak PRO server run under Windows NT, and Microsoft SQL Server Database. When XP SP2 was installed in PC Client, the database connection between server and client is refused. The logon fails, although the XP firewall was disabled.