I don't really get a crash--it hangs. Graphic publisher puts up a busy icon while it's sending data to the printer, and the problem is that the busy pointer never goes away, and can't be cancelled. The print job does finish, though, and the printout is complete and fine.
This problem does not occur when I print to the postscript printer on the same print server.
I have netpar set up so the postscript printer is unit 0 and the Epson is unit 1. In Turboprint, for the Epson, I print to device "parallel.device", unit 1. However, I have also tried setting turboprint to print to PAR:, and using ACTIVEUNIT to direct output to unit 1, with the same results.
--Ray