"Startdata" is a PostScript operator that is font-related. PostScript errors regarding "Startdata" can show up if your RIP cannot handle the way in which fonts are embedded in a PostScript or PDF file. This seems to happen for instance when PDF files containing CID (composite) fonts are printed to a PostScript level 1 or level 2 RIP.

Send your file to a PostScript 3 RIP.

Or try to find a way in which the fonts are not encoded as composite fonts. InDesign 1.0 for instance has the annoying habit of encoding fonts as composite fonts when a PDF file is created straight from InDesign. Avoiding PDF and printing directly to the RIP might get you around this problem.