I can't print to my Canon i550 from the Gimp. I use an eMac running Tiger (OS 10.4.8) and I've installed gutenprint-5.0.0.U, Ghostscript, espgs-7.07.1.ppc, usbtb-1.0.15.uni, and pslevel1-foomatic-1.1.ppc. How can I remedy the situation, or should I just abandon the Gimp and seek another program?