Offending command: setoverprint

A PostScript error “typecheck” offending command “setoverprint” can show up when when output a file containing Multi-Ad Creator (3.7 or earlier) EPS-files from InDesign 1.x for Macintosh. This error is documented in more detail on the Adobe web site.

Solutions
Open the EPS-files in another application like Illustrator or FreeHand, save them again and output the updated file. You could also upgrade to Multi-Ad Creator2 and resave the EPS files in that version.