On Tue, 29 Apr 2008, Marco Grazzi wrote: This presumably means that the LANG environment variable is not set on your system. You could try, at a command prompt, echo $LANG and see what you get. I don't think this is a big problem for gretl, though it seems unusual. You'll get gretl in English, with '.' as decimal separator. For reference, on my system I get: waverley:~/src/build$ echo $LANG en_US.UTF-8 That's OK, it just means you're using UTF-8. That's right, these two files are auto-generated so they're not in the CVS repository (though they are in the release tarball). To build them, add the flag --enable-build-doc when doing ./configure. If the "build-doc" requirements are too onerous (XML amd XSL stuff), you could grab the .hlp files from the release tarball (currently gretl-1.7.4.tar.bz2) and install them in PREFIX/share/gretl . Hope this helps. Allin Cottrell