The 'Setdash' command is used in PostScript to define how a line in a drawing or lay-out should be dashed. Problems with this command are pretty rare and may point to a bug in the software used to create drawings.

Try opening all EPS graphics from your page using the originating application and simply resave the files. Then update the links in the page and try printing again. Saving in an older version (eg saving Illustrator 7 files in the Illustrator 6 format) may also get the job done.

 You could also try deleting all dashed lines from the page and replacing them with fresh copies.