Since it also failed on windows xp which I presume is 32 bit I wonder if you got a faulty usb part.
Serial is better but you probably need a serial to usb convertor as well unless your pc has serial ports.
I connected directly to one other pc, the one where the station originally should be,
end there it worked like a charm. But, on that one I have not updated any drivers to
latest versions, and I wonder what will happen when installing latest WD on it?
Anyway.. since it is going to be a while before moving to another location, I really
would like it up and running here, and is seriously considering a serialconnector