[OS X TeX] clickable url in Pdftex

[Alain Schremmer]

In the interest of leanness, I thought to replace some background in  
the Magnum Opus by references to Wikipedia.

I wrote the Magnum Opus with hard copy in mind but it turns out a  
number of people read it on line which made me think of making the url  
clickable. So, I put

\usepackage{hyperref}%[pdfborder={0 0 0}]

in the preamble and documents that compiled very nicely until then,  
including stuff like:

> (See \url{http://en.wikipedia.org/wiki/Arithmetic})

immediately failed with the message:

> LaTeX Warning: You have requested, on input line 250, version
>                `2009/07/21' of package kvoptions,
>                but only version
>                `2007/10/18 v3.0 Keyval support for LaTeX options (HO)'
>                is available.
>
> (/usr/local/texlive/2010/texmf-dist/tex/latex/hyperref/pd1enc.def)
> (/usr/local/texlive/2010/texmf-dist/tex/latex/latexconfig/ 
> hyperref.cfg)
> /usr/local/texlive/2010/texmf-dist/tex/latex/hyperref/hyperref.sty: 
> 3896: Undefined control sequence.
> l.3896 \DeclareLocalOptions
>                            {%
> ?

However, line 250 is in the middle of a big block of text that is  
commented out.

As for "kvoptions", I installed Mac Tex a few months ago when I went  
from 10.4.11 to 10.5.8.  and I forgot how to find the version number  
via the terminal.

Once hyperref was removed, all went back to smooth operation. So no  
harm but hyperref is truly not for the faint of heart.

Still, what did I do wrong? (<http://en.wikibooks.org/wiki/LaTeX/Hyperlinks 
 > did not help.)

Regards
--schremmer