If you're still having problems, try reinstalling the driver:
Go to my link above.
Click on 'Support'
If it's not already selected, click on 'Drivers and Software'
Look for the most recent driver version shown. (I'm seeing v7.14 but that might be because Epson's server has seen that I've got got Windows 7. If you've got a different version of Windows you might see something different).
Click on it to download it to any convenient location on your computer.
Go to that location and double-click on the file you downloaded to run the driver installation program.
Restart your computer.
Cross your fingers ;-)