I recently installed System 6.0.5 and Finder 6.1.5. Now, when I print on
my LaserWriter IINTX, the PrintMonitor flashes. I have to select it and
then click OK to proceed. With System 6.0.3, selecting Print did the whole
thing without my having to select PrintMonitor.
It sounds as if you have Manual Feed selected. Try again with Automatic
Feed selected instead. If you have any doubts about the system upgrade,
rerun the Installer to re-create the system files.