Glenn, thanks for the reply.

I know the script is not running on the Windows 8 computers, because it doesn't map the drives, the printers, or run the few programs I have setup.

However, after login, if I browse to SYSVOL and run the logon.cmd batch file, a command prompt window will pop up and the script is run because the drives get mapped, etc.

Yes, I have had the Wait for Network setting enabled in GPO for many years.