[NTG-context] Problem with LMTX on macOS: no format file given, quitting

Tommaso Gordini illinguista1972 at gmail.com
Sun Feb 12 16:28:59 CET 2023

Hello list,

I am writing to you about a problem with ConTeXt LMTX and TeXShop 5.11 on
macOS 12.6.3 (MacBook Air M2).

Yesterday I installed LMTX on my computer following the instructions here:


The LMTX tree is correctly installed in the directory I've chosen:

charlie at Air-di-Tommaso ~ % which luametatex
charlie at Air-di-Tommaso ~ % type luametatex
luametatex is
charlie at Air-di-Tommaso ~ % luametatex --version
This is LuaMetaTeX, Version 2.10.06

Execute 'luametatex --credits' for credits and version details.

There is NO warranty. Redistribution of this software is covered by the
of the GNU General Public License, version 2 or (at your option) any later
version. For more information about these matters, see the file named
and the LuaMetaTeX source.

Functionality : level 20230126
Support : context at ntg.nl
Copyright : The Lua(Meta)TeX Team(s) (2005-2022+)

The LuaMetaTeX project is related to ConTeXt development. This macro package
tightly integrates TeX and MetaPost in close cooperation with Lua. Updates
happen in sync with ConTeXt and when needed. Don't be fooled by unchanged
long-term stability is the objective.

However, I also get this:

charlie at Air-di-Tommaso ~ % luametatex
startup error : no format file given, quitting

Also, I created the TeXShop engine as indicated on the page (I've done it
before with no problems).
However, now when I run LMTX from editor to compose a source, the source is
compiled with MkIV Standalone, which I have in another folder (
/Users/charlie/Documents/ConTeXt/ConTeXt-MkIV). LMTX doesn't even work from
a terminal, of course.

The curious thing is that even by launching the ConTeXt present in TeX
Live, what really works is always MkIV Standalone.

Do you have any idea where I might have gone wrong?

Thank you very much
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