I just set up my Epson all-in-one this week, so I can guess what you need to do.
First of all, I assume you have the proper driver, since you mention iscan.
Check that sane-find-scanner can detect the unit.
Make sure you have the epkowa.conf file in the /etc/sane.d directory, and that the usb line is uncommented. You may have to copy it over from the source directory if it didn't install it automatically.
I think I see the big problem though. There should be a udev rule in /etc/udev/rules.d/025_libsane-extras.rules for your device, but I don't see one in mine. I have no idea why it's not there, since it should have all the epkowa-supported devices. So you may have to add it, using the product id number from sane-find-scanner or lsusb, and using the same form as the other entries. Of course, you'll have to install the libsane-extras package first if you haven't already.
Finally, it's probably not necessary in this case, but there are some configurations you can do for the sane daemon, as described in 'man saned'.
Confirm that the scanner is available with scanimage -L
HTH. Good luck.
Last edited by David the H.; 10-15-2006 at 08:15 AM.