A new driver for the pro3800 was released on the 30 august, 2012 what it does I do not know cannot check out until next week when I get home. Hot news.... just said update for Mountain Lion.. I now also find it is available for most other printers...
please keep me posted on results if you decide to download it...
Epson Stylus Pro 3800
Driver (9.04) 30.77 MBs - 30/08/2012 direct download
Mac OS X Common Updater (8.0) 36.94 MBs - 12/10/2011 direct download
Driver (8.64 30.16 MBs - 01/08/2011 direct downloa