steps to see the warning: create a text file mini.pcl with just the letter A. pcl6-904-win32.exe -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=mini.pdf mini.pcl pcl6-904-win32.exe -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=fontpage.pdf fontpage.pcl prints the warning 76 times.
This is fixed in any release later than this messsage I don't have the rev offhand.