Have you actually installed the driver?
This is the file you should have downloaded:
ftp://download.epson-europe.com/pub/download/
3246/epson324601eu.exe
(Copy and past that line into your browser's address bar, then click 'Go', if it's different to what you actually downloaded).
However downloading the file doesn't install the driver. You need to go the wherever you've downloaded the file to, and double-click on that file, in order to start the installation process.
Chris