I may be all wet here, I'd first try plotting to a file. CGM/HPGL2 file. Then I'd go on to use nxprint and print from the file to the printer. This should help eliminate any questions you have in regards to whether it's the biting it on the plotting or on the printing.
You should also be able to see this in the syslog file as well. You may need to either grab the file when it crashes or tell it to save the syslog regardless of whether it crashes. Sometimes I've noticed it would crash especially when it would CTD crash to desktop and not show the user an error and purge the log file.
Also try plotting to a regular printer or a local printer if possible first and eliminate if it's a plotter communication problem. You may find that a setting or two may be a bit tweaked.
Thanks,
Brian