OS X 10.4.11 is the operating system, and yes, I've checked the SANE libraries,and yes, I saw that my Epson Stylus NX 400 All -in-one Printer is on the list of supported scanner/printers. I reiterate, I cannot get the SANE files I downloaded to work, and I VERY CAREFULLY double checked to see that they were the CORRECT MAC FILES for my operating system. Here is what happens with the program: In Gimp, I go to File/Create/ and click Scanner/Camera. A pop up window shows the list of scanning programs, of which SANE is the only one. I select SANE, press OK, and after a slight delay, another window comes up which says, quote, "No image source was found by the SANE library. Consult the documentation at http://www.ellert.se/twain-sane/
if you expected something different." I've consulted the documentation as stated, and it all says that the software should work, etc., etc, and so forth ad infinitum.
Now, I've tried going around Gimp to get some files scanned, using Preview and Image Capture, and both programs give me the same message, that the SANE program is in use by another application. What that application could be I have no idea, nor do I understand why Preview and Image Capture will not acknowledge the Epson driver instead of the (apparently) useless SANE program.