The error message when I tried to make 25 TIFF files into a PDF/X 3 file.
Mind you that NONE of the image files have layers, text or anything else that I can see.
What is the "PDFXOutputIntentProfile and CalCMYKProfile". That seems to be the problem.
"CalCMYKProfile: U.S. Web Coated (SWOP) v2
PDFXOutputIntentProfile: None
PDFXOutputIntentProfile and CalCMYKProfile must be the same for Convert All Colors to CMYK.
%%[ Error: undefined; OffendingCommand: setdistillerparams; ErrorInfo: PDFXOutputIntentProfile setdistillerparams ]%%
%%[ Flushing: rest of job (to end-of-file) will be ignored ]%%
%%[ Warning: PostScript error. No PDF file produced. ] %%"