You don't mention which download you have. I've had a look at the Eposon site and see there is what seems to be a programme, Epson Scan 3.0u, rather than a driver. From their page -
"EPSON Scan directly controls all of the features of your EPSON scanner. With this software you can scan images in color, grayscale, or black and white and obtain professional quality results. This program is the standard cross-platform interface between your scanner and most applications. You can access it from any application that supports the TWAIN standard."
Look here - click here
Hope that's of some use.