[NTG-context] No hyphenation in Bulgarian

Hi, I have to typeset a Bulgarian document but the hyphenation doesn’t work. The lang-bg.lua file is not loaded, according to the log. (All four lang-bg files are present in /tex/texmf-context/tex/context/patterns/) \usetypescriptfile[type-gentium] \usetypescript[gentium] \setupbodyfont[gentium,12pt] \mainlanguage [bg] \starttext \hyphenatedword{програмираната} \stoptext Do I have to do anything special, in addition to \mainlanguage [bg] ? Russian hyphenation does work. Thanks for any advice. -- Tom