I'm having the same type of trouble. my printcenter app just quits right before it gets ready to do the job. It's really a pain. But I can print from classic apps no problem, so I know it's an osx software bug. I'm also using an epson 740i, so the driver for it is built in to osx.
I just can't find anybody to give any info on this. I wonder if it's working for everyone else? I guess I might just have to wait for the next osx update and see if it's fixed.