This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP
For the MinRIP to catch error messages, output must be diverted via the %output% device. So, if you add an event handler (as shown above) in lib/skinmin/src/skinmin.c , in your RIP configuration you must change:
(%console%) dup (r) file exch (w) file true
to
(%console%)(r)file(%output%)(w)file true
NOTE: Please note that not all errors are documented, this work is still ongoing.