A PostScript error undefined, offending command X_isTransparency can pop up when printing from Mac OS X 10.6.8 to a Xerox WorkCentre 7655.
Solutions
Try uninstalling and reinstalling the printer drivers.
Prepress, printing, PDF, PostScript, fonts and stuff…
A PostScript error undefined, offending command X_isTransparency can pop up when printing from Mac OS X 10.6.8 to a Xerox WorkCentre 7655.
Solutions
Try uninstalling and reinstalling the printer drivers.