Sounds like you are having some issues installing this printer on your server. From what I can tell, because of the setup, the traditional drivers would likely not be able to locate the printer on the network to finish the installation. I would try using a more universal software and seeing if that gives you more access. I would try either the PCL6 driver or the Postscript driver and seeing if you can finish the installation.
Let me know how that goes!
-Spencer
PS I hope you have had a great day!