I ran into the exact same problem. Aditya resolved the issue as follows:


The wiki info to create  an executable  file ConTeXt-MKIV.engine containing

#!/bin/bash
export PATH=/Applications/ConTeXtMinimals/tex/texmf-osx-intel/bin:$PATH
export TEXMFCACHE=/Applications/ConTeXtMinimals/tex/texmf-cache
context "$1"

in ~/Library/TeXShop/Engines
is slightly but catastrophically outdated. The file needs to read

#!/bin/bash
export PATH=/Applications/ConTeXtMinimals/tex/texmf-osx-64/bin:$PATH
export TEXMFCACHE=/Applications/ConTeXtMinimals/tex/texmf-cache
context "$1"

Matthias



On May 23, 2011, at 2:13 PM, Mathieu DUPONT wrote:

> 
> I followed all these steps to install MkIV on a Mac and to run it with either Smultron or TexShop :
> 
> http://wiki.contextgarden.net/ConTeXt_Minimals/Mac_Installation
> 
> However it works fine with Smultron (but I am more used to TexShop to run TeX files), with TexShop I get :
> 
> MTXrun | unknown script 'context.lua' or 'mtx-context.lua'
> 
> Even after running the following command line :
> 
> luatools --generate
> 
> it doesn't help at all.
> 
> 
> Thanks for any hint,
> 
> 
> Mathieu
> 
> 
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