I am no printing expert but here here's my story.
I have an Epson CX7800 and it needs the Gutenprint 5.0 driver to work. The CX7800 is a printer/scanner/copier and everything works, perfectly as I can tell, using this driver. I see that Gutenprint 5.0 also supports the CX4600, I don't know which version of Gutenprint you installed.
Gutenprint 5.0 is included in openSuse 10.2, Gimp-print 4.7 (I believe) was included in Suse 10.1, don't know about Suse 10.0.
I was using Suse 10.1 for a short while and tried to find a rpm to install Gutenprint 5.0 but was not successful, never could get it to work. I just did a quick Google and found this page that says that they have an openSuse rpm package for Gutenprint 5.0. I would suggest trying to reload the rpm.
http://rpmfind.net/linux/rpm2html/se...ery=gutenprint