Using the new beta from context-minimal This is LuaTeX, Version beta-0.75.0-2013030308 (rev 4589) \write18 enabled. (/Users/jin/pkgs/ConTeXt/tex/texmf-context/tex/context/base/cont-yes.mkiv ConTeXt ver: 2013.03.20 21:07 MKIV fmt: 2013.3.21 int: english/english system > 'cont-new.mkiv' loaded (/Users/jin/pkgs/ConTeXt/tex/texmf-context/tex/context/base/cont-new.mkiv system > beware: some patches loaded from cont-new.mkiv ) system > files > jobname 'bulk_trans', input 'bulk_trans', result 'bulk_trans' fonts > latin modern fonts are not preloaded languages > language 'en' is active (bulk_trans.tex resolvers > modules > 'gnuplot' is loaded (/Users/jin/pkgs/ConTeXt/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.tex loading > Gnuplot module ! Undefined control sequence. log system > tex > error on line 99 in file /Users/jin/pkgs/ConTeXt/tex/texmf-modules/tex/context/third/gnuplot/t-gnuplot.tex: Undefined control sequence ... <argument> ...:= \@@GNUPLOT@term@context@linejoin ; gp_use_dashed := \@@GNUP... \meta_start_extensions ...extensions("#1",\!!bs #2 \!!es )} l.99 \stopMPextensions ? This happens with context running on a file generated by gnuplot 4.6.1. I have been using context in the texlive 2012 without any problem.