2013/11/12 bart deruyter > I do use LyxBook --Archaic as document class, it is for a novel, perhaps > this class does not support Dutch? >
This is not related to the class. In recent versions of babel (the multilingual package), the individual language support files have been split from the core package (which is a good move from a babel maintenance point of view). For some strange reason, however, these language packages are not installed by default by some distros. I suppose you need to check whether you have the necessary texlive-lang-<yourlang> packages installed. HTH Jürgen