On Wed, Sep 28, 2011 at 6:26 PM, Carl Magnuson wrote:
> I tried converting my PDF map to a JPG using Ghostscript yesterday. Â It
> seemed to convert properly, though I saw a handful of warnings that there was
> an "Unknown operator: 'pop'" in the source PDF. Â Is Therion producing
> something which isn't to spec, or producing a newer version PDF that
> Ghostscript isn't prepared for? Â I was using Therion 5.3
PDFs should conform the specification, but they are quite complex and
as therion constructs them using low-level PDF commands and there is a
custom EPS to PDF conversion, there is a possibility for some errors.
Therion output is usually tested in Adobe Reader, which is quite
sensitive to problematic PDF files. I tried to convert some complex
maps to JPG format using GS 8.71 and did not get any warnings. Could
you post some problematic file?
Martin