I think there is a bug in the (latest) beta (2014.07.30 10:31 MKIV beta fmt: 2014.8.2 int: english/english) that was *not* there earlier this year! Please, could somebody help and maybe provide a tip for a workaround? It concerns the integration with tikz where I get now the following error message: util-lib.lua:246: module 'pgf.gd.control' not found: no field package.preload['pgf.gd.control'] no file '/usr/local/share/lua/5.2/pgf/gd/control.lua' no file '/usr/local/share/lua/5.2/pgf/gd/control/init.lua' no file '/usr/local/lib/lua/5.2/pgf/gd/control.lua' no file '/usr/local/lib/lua/5.2/pgf/gd/control/init.lua' no file './pgf/gd/control.lua' no file '/usr/local/lib/lua/5.2/pgf/gd/control.so' no file '/usr/local/lib/lua/5.2/loadall.so' no file './pgf/gd/control.so' no file '/usr/local/lib/lua/5.2/pgf.so' no file '/usr/local/lib/lua/5.2/loadall.so' no file './pgf.so' stack traceback: [C]: in function 'savedrequire' .../context/tex/texmf-context/tex/context/base/util-lib.lua:246: in function 'require' ...neric/pgf/graphdrawing/lua/pgf/gd/control/Sublayouts.lua:41: in main chunk [C]: in function 'savedrequire' .../context/tex/texmf-context/tex/context/base/util-lib.lua:246: in function 'require' ...graphdrawing/lua/pgf/gd/interface/InterfaceToDisplay.lua:45: in main chunk [C]: in function 'savedrequire' .../context/tex/texmf-context/tex/context/base/util-lib.lua:246: in function 'require' [\directlua]:1: in main chunk 1101 } 1102 } 1103 1104 1105 % 1106 % Ok, fire up the system by creating the binding! 1107 % 1108 \directlua{ 1109 require 'pgf.gd.interface.InterfaceToDisplay' 1110 pgf.gd.interface.InterfaceToDisplay.bind(require 'pgf.gd.bindings.BindingToPGF') 1111 >> } A minimal example is: \usemodule[tikz] \usetikzlibrary[graphs] \usetikzlibrary[graphdrawing] \starttext \starttikzpicture \graph { a -> {b, c} -> d }; \stoptikzpicture \stoptext Günter