On Windows and OS X the printing subsystem has been disabled by default. You can enable it by running the PixInsight Core application as follows from a terminal (OS X) or an MS-DOS command line window (Windows):
PixInsight --with-printer
Use the --help argument:
PixInsight --help
for complete information on core arguments and options.
The printer has been disabled on Windows and OS X because this part of PixInsight requires a complete redesign/reimplementation on these platforms. It sort of works and is stable, but does not comply with our standard quality requirements.
