[OS X TeX] Re: pdf v1.6 problem

Chris Milne cjmilne at gmail.com
Fri Mar 10 17:52:10 EST 2006

Ross, William,

Thanks for the replies. After a little investigation into pdftex it
appears that pdftex.cfg no longer exists & has been replaced with
pdftexconfig.tex. The option William is referring to has been changed
to \pdfminorversion (though in my copy of pdftexconfig.tex it was
still \pdfoptionpdfminorversion).

Adding \pdfminorversion=6 to the preamble of my document makes the
original error message go away, but it's now replaced with:

<figures/cascades-CS2-111212-labelled.pdf, id=854, 564.09966pt x
526.2119pt> <use figures/cascades-CS2-111212-labelled.pdf>
Error: PDF version 1.6 -- xpdf supports version 1.5 (continuing anyway)

So it appears xpdf is getting involved somehow & it can only handle up
to PDF 1.5. Which presumably means I'm dead in the water.

I've fiddled with the PDF Optimizer options in Acrobat & whatever it's
done to combine the two figures in v7.x is FLAKY & it can't seem to
decide how to fix the problem so it's backwards compatible. I have yet
to find a combo that works & so I give up.

I've wasted too much time on this already & frankly it's not that big
a deal, thanks for help everyone.


Note that editing pdftexconfig.tex appeared to accomplish absolutely
nothing. No matter what change I made to it, when I compiled the LaTeX
doc up it got ignored. I had to put \pdfminorversion=6 into the
preamble for it work.

Subject: Re: [OS X TeX] pdf v1.6 problem
From: "William Adams" <will.adams at frycomm.com>
Date: Thu, 9 Mar 2006 15:28:01 -0500

I believe you need to add


(or maybe 6 or 7?) to your document preamble. Check the pdftex
manual, but if memory serves, that's the option for controlling
supported version.


William Adams
senior graphic designer
Fry Communications

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Subject: Re: [OS X TeX] pdf v1.6 problem
From: "Ross Moore" <ross at ics.mq.edu.au>
Date: Fri, 10 Mar 2006 11:34:36 +1100

Hi Will and Chris,

On 10/03/2006, at 7:28 AM, William Adams wrote:

> I believe you need to add
> \pdfoptionpdfminorversion=5

To up the version number for all jobs, include a line

pdf_minorversion 6

within the  pdftex.cfg  file.
To find this file, use in a terminal:

  kpsewhich -progname=pdftex pdftex.cfg

> (or maybe 6 or 7?) to your document preamble. Check the pdftex
> manual, but if memory serves, that's the option for controlling
> supported version.

No, that's not quite correct.
This parameter controls the *warning message* that is produced.

That is, if you set the number higher than what the pdfTeX binary
**actually** supports, then pdfTeX now says something like:

 Version 1.6 is a higher PDF version than is supported (1.5).
 Trying anyway.

So maybe it'll work, maybe not.
Presumably this depends on whether any 1.6 specific stuff
is actually used in the imported image.
In practice I've not had any trouble (that I'm aware of)
importing images that purport to be 1.6.

Hope this helps,



Miller Group
Department of Chemistry
University of Toronto
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