Thank you!
I've replaced the "default.nli" in my context tree with the file you send me.
Now "texexec letter.tex" and "texexec --xtx letter.tex" works,
but "texexec --lua letter.tex" fails with:
-------------8<----schnipp-----
ConTeXt ver: 2009.05.14 16:44 MKIV fmt: 2009.5.18 int: english/english
system : letter.top loaded
(letter.top)
fonts : preloading latin modern fonts
bodyfont : 12pt rm is loaded
language : language en is active
system : module letter loaded
(letter.tex
system : module letter (line 2) already loaded
systems : begin file letter at line 2
! Undefined control sequence.
l.3 \startletter
-------------8<----schnapp-----
- Markus
Fixed version is only (don't know how long it takes till you get it with the minimals),
for the moment use the attached file. Sorry for the crash (which was my fault) but
a few features I use in my module depend on the ConTeXt version (especially when
you use MkIV).
Wolfgang