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 CorelDraw, save them again and output the updated file. You could also upgrade to Multi-Ad Creator2 and resave the EPS files in that version.