first turn on the printer and in os 9 open the system profiler. Can you see your printer there? Does your Mac recognize it in os 9? Maybe in os 9 two driver have conflicts with each other, if so, this is what you should do: first startup with only the mac extensions, then open system profiler again and see if it recognizes your printer and if you can print! If this doesn't work, do the same except startup with your apple extensions and the printer driver. If this works, then a driver of another program/hardware is having a conflict with your printerdriver!!