Dear list, I am currently testing and experimenting such things as a brand new installation (Context Process 0.63 2016.05.22 15:18) on a Windows x64 computer. I have made a new installation of ConTeXt Standalone (with TeXWorks), downloading the *.zip file, etc. 1) Download the context-mswin.zip in C:\[...]\Documents; 2) mkdir 'context' => cd 'context' 3) Unzip it and launch context-setup.bat in the new C:\[...]Documents\context 4) Then, go to \context\tex and launch 'setuptex'; 5) Then again, cd \context\tex\texmf-win64\bin and do : 'context --generate', and 'context --make'. As a result, the compilation after context --generate is 0,988 s. (and much more than 1 sec with 'context --make' command, which needs usually more than 30 sec. to compile) and after context --make I obtain a \dumpdump message with this cryptic sentence (in French) : 'luatex' is not recognized as an internal or external command, an executable program or a command file. And when I try to do this : \ starttext \startsection[title={Testing ConTeXt}] This is my {\em first} ConTeXt document. \stopsection \stoptext Here is the result : mtx-context | fatal error: no return code, message: luatex: No such file or directory I have missed something ... but what is it ? I am deeply sorry to bother you with this question, but I don't clearly see when, where and what I have missed. Maybe I'm tired ... JP