It
does seem to communicate with the printer because the
green light blinks, but then nothing happens and it
disappears from the print queu.
Any indication of a problem in the CUPS error log? Open the Console (/Applications/Utilities). Click on the Logs icon at the top left. In the left hand pane, navigate down to and highlight /var/log/cups/error_log. The right hand pane should fill up with the error_log. If you don't spot the problem, copy about the last 25 or 30 lines of the error log and paste in a reply to this post. I'll see if I can spot what is going wrong.
As you mentioned that this is a Laserwriter IINT, can I presume that you have it connected to your computer via an Ethernet to LocalTalk bridge such as the AsanteTalk? Have you followed all the troubleshooting techniques for this sort of set up, ie, powering everything down and starting things up in the specified order? Greg is much more knowledgeable about the AsanteTalk than I am. We may need his input for the proper sequence et al.
Matt
Mac Mini; B&W G3/300