After some hassles (no problem with me, to be expected from something  
new as luatexbeta) I finally got as far as:

compiling and installing luatex, luatools and friends.
setting up shell variables.
doing "texexec --make --all --luatex"

Alas, mag12 tells about installing luatex, it does not tell me how to  
run things.
I thought that "luatex --fmt=cont-en luatest1.tex" would work, but it  
gives me:
   This is luaTeX, Version 3.141592-beta-0.10.2-2007081511 (Web2C 7.5.6)
   I can't find the format file `cont-en.fmt'!

Now doing "luatools --ini --compile cont-en" tells me "Beginning to  
dump on file cont-en.fmt (format=cont-en 2007.8.15)"
but even then I get:
126 ~/temp/luatex: luatex --fmt=cont-en luatest1.tex
This is luaTeX, Version 3.141592-beta-0.10.2-2007081511 (Web2C 7.5.6)
I can't find the format file `cont-en.fmt'!
And no better with:
127 ~/temp/luatex: luatex --fmt=cont-en.fmt luatest1.tex

I did the example "luatools lmr12.afm" and it gave neatly "/usr/local/ 
texlive/2007/texmf-dist/fonts/afm/public/lm/lmr12.afm"
but if I do "luatools cont-en.fmt" it just returns an empty message.

How do I proceed? What am I missing here?

Hans van der Meer