[NTG-context] XeConTeXt set up issue

Apart from my reference numbering problem with the bib module, everything was working OK. So, I decided it was time to have a go with "XeConTeXt". I was following Adam's instructions here: http://contextgarden.net/XeTeX Checked: /usr/local/teTeX/share/texmf.local/context/config:texexec.ini for: for tetex set TeXPassString to -progname=context for tetex set TeXVirginFlag to -ini OK. Just to be safe ran: texexec --verbose texexec --make texhash No problems so far. Then: sudo texexec --make --xtx en gave: TeXExec 5.2.5 - ConTeXt / PRAGMA ADE 1997-2005 TeX hash binary : mktexlsr comment : hashing may take a while ... mktexlsr: Updating /usr/local/teTeX/share/texmf.local/ls-R... mktexlsr: Updating /usr/local/teTeX/share/texmf.gwtex/ls-R... mktexlsr: Updating /usr/local/teTeX/share/texmf.tetex/ls-R... mktexlsr: Updating /usr/local/teTeX/share/texmf/ls-R... mktexlsr: Updating /var/tmp/texfonts/ls-R... mktexlsr: Done. This is XeTeX, Version 3.141592-2.2-0.91 (Web2C 7.5.3) (INITEX) (WARNING: translate-file "natural.tcx" ignored) entering extended mode (/usr/local/teTeX/share/texmf.local/tex/context/base/cont-en.tex (/usr/local/teTeX/share/texmf.local/tex/context/base/context.tex (/usr/local/teTeX/share/texmf.local/tex/context/base/syst-pln.tex) (/usr/local/teTeX/share/texmf.local/tex/context/base/syst-prm.tex) (/usr/local/teTeX/share/texmf.local/tex/context/base/syst-etx.tex) (/usr/local/teTeX/share/texmf.local/tex/context/base/syst-omg.tex) (/usr/local/teTeX/share/texmf.local/tex/context/base/syst-xtx.tex ! I can't find file `xplain.tex'. l.21 \input xplain.tex Please type another input file name: xplain.tex is indeed nowhere to be found I reinstalled TeX then XeTeX and then ConTeXt from Gerben's and Jonathan's i-Packages choosing "2004 Stable" for TeX and "beta" for ConTeXt. Went through the same procedure. Same result. How to proceed ? [Just to test, I then ran: texexec --xtx mySampleFile.tex and got: TeXExec 5.2.5 - ConTeXt / PRAGMA ADE 1997-2005 executable : xetex format : cont-en inputfile : /Users/Mark/mySampleFile output : xetex interface : en current mode : none TeX run : 1 This is XeTeX, Version 3.141592-2.2-0.91 (Web2C 7.5.3) (WARNING: translate-file "natural.tcx" ignored) ---! cont-en.fmt was written by pdfetex (Fatal format file error; I'm stymied) which probably corresponds to the fact that was not generated in: /usr/local/teTeX/share/texmf.local/web2c/ I suppose ? because the texexec --make --xtx en couldn't complete ?] Any ideas ? (As I say, everything else seems to be working ('part from that bib module problem I mentioned in a separate post) wtia, mark.