I just updated my Acrobat 9, but I'm still getting the error:
%%[ Error: syntaxerror; OffendingCommand: --nostringval-- ]%%
%%[ Flushing: rest of job (to end-of-file) will be ignored ]%%
%%[ Warning: PostScript error. No PDF file produced. ] %%
I removed the text on page 49 of the document and the error moved to page 47.