Mojca, OK. Removed quotes, so texmfstart.bat now reads: @echo off ruby "C:\Program Files\MiKTeX 2.7\scripts\context\ruby\texmfstart.rb" %* This now works: $ C:\temp>texmfstart texexec --help TeXExec | version 6.2.0 - 1997-2006 - PRAGMA ADE/POD TeXExec | --check check versions TeXExec | --figures generate overview of figures TeXExec | --listing list of file content TeXExec | --make make formats TeXExec | --modules generate module documentation TeXExec | --mpgraphic process mp file to stand-alone graphics TeXExec | --mpstatic process mp/ctx file to stand-alone graphics TeXExec | --mptex process mp file TeXExec | --mpxtex process mpx file TeXExec | --pdfarrange impose pages (booklets) TeXExec | --pdfcombine combine multiple pages TeXExec | --pdfcopy copy pages from file(s) TeXExec | --pdfselect select pages from file(s) TeXExec | --pdfsplit split file in pages TeXExec | --pdftrim trim pages from file(s) TeXExec | --process process file TeXExec | TeXExec | --help --all shows all switches However, I cannot make the formats. Going to Miktex 2.7->Settings->Formats, attempting to build cont-en results in, even though I've copied cont-en.ini into the directory expected by Miktex 2.7. Creating the cont-en.pdftex format file... Running pdftex... This is pdfTeX, Version 3.141592-1.40.4 (MiKTeX 2.7) (INITEX) entering extended mode ("C:\Program Files\MiKTeX 2.7\tex\context\config\cont-en.ini") ! Emergency stop. <*> cont-en.ini No pages of output. Transcript written on cont-en.log. makefmt: pdftex failed on cont-en.ini. initexmf.EXE: The operation failed for some reason. So, here is where I stand. D.