Hello,
** Otared Kavian <otared@gmail.com> [2019-12-06 04:23:28 +0100]:

> Dear Hans,
 
> The problem I described in my previous message comes indeed from
> \defineexpansion which is not defined.  Upon commenting out the lines
> 95--98 in the file « hand-ini.mkxl » that is the four lines:
 
> \defineexpansion
>   [\c!step=1,
>    \c!stretch=40,
>    \c!shrink=20]

That's strange. I indeed see these lines in 'hand-ini.mkxl' but I could
recreate format without problem on my Linux box (Archlinux x86_64), even
after clearing the cache and doing

  $ mtxrun --generate ; context --make

gives me working context (lmtx).

> I could remake the format with version 2019.12.05 18:59. Then lmtx
> works fine as far as my files are concerned, but I don't know if there
> are side effects… (However, once the format is made, if I uncomment
> those lines then lmtx works fine, but clearly one cannot make again
> the format)

I tried two examples with lmtx and they typeset fine.

> Best regards: OK

[...]

---
WBR, Vladimir Lomov

-- 
There is grandeur in this view of life, with its several powers, having been
originally breathed into a few forms or into one; and that, whilst this planet
has gone cycling on according to the fixed law of gravity, from so simple a
beginning endless forms most beautiful and most wonderful have been, and are
being, evolved.
		-- Darwin