! Undefined control sequence. \pgfsetplottension ...ttension {\pgf@sys@tonumber \pgf@x }

[Antonio Olivares]

Dear folks,

I have been trying to learn tikz as illustrated in the following pages:

http://www.texample.net/tikz/examples/feature/mathematical-engine/

more specifically I get the error in the subject title with the spiral
example posted here:

http://www.texample.net/tikz/examples/fibonacci-spiral/

[olivares at quadcore ~/tmp]$ latex spiral.tex
This is pdfTeX, Version 3.1415926-2.3-1.40.12 (TeX Live 2011)
 restricted \write18 enabled.
entering extended mode
(./spiral.tex
LaTeX2e <2011/06/27>
Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, ge
rman-x-2011-07-01, ngerman-x-2011-07-01, afrikaans, ancientgreek, ibycus, arabi
c, armenian, basque, bulgarian, catalan, pinyin, coptic, croatian, czech, danis
h, dutch, ukenglish, usenglishmax, esperanto, estonian, ethiopic, farsi, finnis
h, french, galician, german, ngerman, swissgerman, monogreek, greek, hungarian,
 icelandic, assamese, bengali, gujarati, hindi, kannada, malayalam, marathi, or
iya, panjabi, tamil, telugu, indonesian, interlingua, irish, italian, kurmanji,
 lao, latin, latvian, lithuanian, mongolian, mongolianlmc, bokmal, nynorsk, pol
ish, portuguese, romanian, russian, sanskrit, serbian, serbianc, slovak, sloven
ian, spanish, swedish, turkish, turkmen, ukrainian, uppersorbian, welsh, loaded
.
(/usr/local/share/texmf-dist/tex/latex/base/minimal.cls
Document Class: minimal 2001/05/25 Standard LaTeX minimal class
) (/usr/local/share/texmf-dist/tex/latex/amsmath/amsmath.sty
For additional information on amsmath, use the `?' option.
(/usr/local/share/texmf-dist/tex/latex/amsmath/amstext.sty
(/usr/local/share/texmf-dist/tex/latex/amsmath/amsgen.sty))
(/usr/local/share/texmf-dist/tex/latex/amsmath/amsbsy.sty)
(/usr/local/share/texmf-dist/tex/latex/amsmath/amsopn.sty))
(/usr/local/share/texmf-dist/tex/latex/pgf/frontendlayer/tikz.sty
(/usr/local/share/texmf-dist/tex/latex/pgf/pgf.sty
(/usr/local/share/texmf-dist/tex/latex/graphics/graphicx.sty
(/usr/local/share/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/local/share/texmf-dist/tex/latex/graphics/graphics.sty
(/usr/local/share/texmf-dist/tex/latex/graphics/trig.sty)
(/usr/local/share/texmf-dist/tex/latex/graphics/graphics.cfg)
(/usr/local/share/texmf-dist/tex/latex/graphics/dvips.def)))
(/usr/local/share/texmf-dist/tex/latex/xcolor/xcolor.sty
(/usr/local/share/texmf-dist/tex/latex/graphics/color.cfg)))
(/usr/local/share/texmf-dist/tex/latex/pgf/utilities/pgffor.sty
(/usr/local/share/texmf-dist/tex/latex/pgf/utilities/pgfrcs.sty
(/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common.tex)
(/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-latex.def
(/usr/local/share/texmf-dist/tex/latex/ms/everyshi.sty))
(/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgfrcs.code.tex))
(/usr/local/share/texmf-dist/tex/latex/pgf/utilities/pgfkeys.sty
(/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgfkeys.code.tex
(/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex
))) (/usr/local/share/texmf-dist/tex/generic/pgf/utilities/pgffor.code.tex))
(/usr/local/share/texmf-dist/tex/generic/pgf/frontendlayer/tikz/tikz.code.tex
(/usr/local/share/texmf-dist/tex/generic/pgf/libraries/pgflibraryplothandlers.c
ode.tex
! Undefined control sequence.
\pgfsetplottension ...ttension {\pgf at sys@tonumber
                                                  \pgf at x }
l.104 \pgfsetplottension{0.5}

? x
No pages of output.
Transcript written on spiral.log.


I am using texlive from freebsd-texlive project:

https://code.google.com/p/freebsd-texlive/

and this error happens on both 8.2 now 8.3-BETA1 boxes and not in 9.0
box :(  It appears to be issue 19 here:

http://code.google.com/p/freebsd-texlive/issues/detail?id=19

Ideas as to how to solve it?  I have removed print/texlive-pgf/ port
and reinstalled it and it still gives same error.  Relevant
information from thread in issue 19 in case it is important:

[olivares at quadcore ~/tmp]$ latex --version
pdfTeX 3.1415926-2.3-1.40.12 (TeX Live 2011)
kpathsea version 6.0.1
Copyright 2011 Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX).
There is NO warranty.  Redistribution of this software is
covered by the terms of both the pdfTeX copyright and
the Lesser GNU General Public License.
For more information about these matters, see the file
named COPYING and the pdfTeX source.
Primary author of pdfTeX: Peter Breitenlohner (eTeX)/Han The Thanh (pdfTeX).
Compiled with libpng 1.5.2; using libpng 1.5.2
Compiled with zlib 1.2.5; using zlib 1.2.5
Compiled with xpdf version 3.02pl5


Thanks,

Antonio