I have the same problem and have contacted Kodak. They said EVO 3.2.6 is not compatible with OSX 10.6.3 and the only solution is to upgrade, aside from using and older system to run files through the RIP.
We had to upgrade to Snow Leopard for CS5 files. So for now I have to split my work between 2 stations, one to do the work and one to use the RIP functions, until I can get the powers that be to spend the $25,000+ for the upgrade. I suspect I may be retired by then.
Although the autonomous car is not quite ready, a lights out print operation is something you can do right now if you have a comprehensive Print MIS (Management Information System). The advantages can put money on your bottom line. So what’s your next step? Link to Article