Text characters (Helvetica neue - apostrophes ' ) disappear when printed. Blank spaces where the apostraphe should be. The text is in imported/placed illustrator files.
Other files with the same format show the apostraphe. The illustrator artwork has 4 layers with the text on its own layer. CS4.
Did you, since you are on a Mac, use the system version of Helvetica Neue? The system version has been (uh) "improved" by Apple, with some weird incompabilities as a result.
Much as I hate to say it, if you don't have an alternative font, maybe -- this one time -- tou might want to outline your text in Illustrator. Take care to keep a copy with editable text.
North America
Europe, Middle East and Africa
Asia Pacific