This message comes from the lp(1) print scheduler, indicating that it is either extremely busy or hung.
If print jobs are coming out of the printer in question, wait until they are finished and then resubmit this print job. If you see this message again, the lp(1) system is probably hung.
See the message "lp hang" for a procedure to clear the queue.
If lp(1) is unable to create a device for printer messages, the message FIFO could be already in use, or locked by another print job.
For more information on the print scheduler, see the section on administrating printers in the System Administration Guide Volume II.