Thanks Wolfgang. I suppose you mean that I need the beta version and not the stable version. Anyhow, I downloaded the beta version and tried to install tikz with the command Mojca mentioned in his post. Everything seemed to go on fine. But when I tried to compile the following simple file I get an error. The following is the information from the terminal window. It says something like ! Undefined control sequence And on help, it says that "The control sequence at the end of the top line of your error message was never \def'ed." As you can see below, it loaded the tikz module. I wonder what the problem is. ****************************************************** MtxRun | loading configuration for /Applications/ConTeXtMinimals/tex/texmf-local/web2c from /Applications/ConTeXtMinimals/tex/texmf-cache/luatex-cache/context/3fc847143b06f084e10e73c8fbdf4ae2/trees/3beab8509a03fa29e95f93134a943a7f MtxRun | loading configuration for /Applications/ConTeXtMinimals/tex/texmf /web2c from /Applications/ConTeXtMinimals/tex/texmf-cache/luatex-cache/context/3fc847143b06f084e10e73c8fbdf4ae2/trees/d9ef00871d7b11751a275cffd8a85753 MtxRun | run 1: luatex --fmt="/Applications/ConTeXtMinimals/tex/texmf-cache/luatex-cache/context/3fc847143b06f084e10e73c8fbdf4ae2/formats/cont-en" --lua="/Applications/ConTeXtMinimals/tex/texmf-cache/luatex-cache/context/3fc847143b06f084e10e73c8fbdf4ae2/formats/cont-en.lua" "./trylua.tex" This is LuaTeX, Version snapshot-0.35.0 (trylua.tex ConTeXt ver: 2009.03.17 11:26 MKIV fmt: 2009.3.17 int: english/english system : cont-new loaded (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/cont-new.tex systems : beware: some patches loaded from cont-new.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/cont-new.mkiv) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/cont-mtx.tex)) system : cont-fil loaded (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/cont-fil.tex loading : Context File Synonyms ) system : cont-sys.rme loaded (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/user/cont-sys.rme (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/type-tmf.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/type-siz.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/base/type-otf.tex)) system : trylua.top loaded (trylua.top) fonts : preloading latin modern fonts bodyfont : 12pt rm is loaded specials : pdftex loaded language : language en is active system : module tikz loaded (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/frontendlayer/t-tikz.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/basiclayer/t-pgf.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/basiclayer/t-pgfcor.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/systemlayer/t-pgfsys.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/utilities/t-pgfrcs.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/context/pgf/utilities/t-pgfmod.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/utilities/pgfutil-common.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/utilities/pgfutil-context.def) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/utilities/pgfrcs.code.tex)) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgfsys.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/utilities/pgfkeys.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex)) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgf.cfg) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgfsys-pdftex.def (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgfsys-common-pdf.def))) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgfsyssoftpath.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/systemlayer/pgfsysprotocol.code.tex)) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcore.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmath.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathcalc.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathutil.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathparser.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.code.tex (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.basic.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.trigonometric.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.random.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.comparison.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.base.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.round.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfunctions.misc.code.tex))) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/math/pgfmathfloat.code.tex)) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorepoints.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorepathconstruct.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorepathusage.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorescopes.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoregraphicstate.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoretransformations.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorequick.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoreobjects.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorepathprocessing.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorearrows.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoreshade.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoreimage.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorelayers.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcoretransparency.code.tex) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/basiclayer/pgfcorepatterns.code.tex))) (/Applications/ConTeXtMinimals/tex/texmf-context/tex/generic/pgf/modules/pgfmoduleshapes.code.tex ! Undefined control sequence. \pgfutil@g@addto@macro #1#2->\begingroup \toks@ \expandafter {#1#2}\xdef #1{... <argument> ...gf@y by -.5\dp \pgfnodeparttextbox } \par \anchor {center}{\ce... \pgfdeclareshape ... \endcsname =\pgfutil@empty #2 } l.549 } ? h The control sequence at the end of the top line of your error message was never \def'ed. If you have misspelled it (e.g., `\hobx'), type `I' and the correct spelling (e.g., `I\hbox'). Otherwise just continue, and I'll forget about whatever was undefined. ? **********************************************************