There might be a metadata in the font containing text specifying which languages the font supports, but that is different from there being a language *feature* in the font.
Oftentimes, a font will support a given script (say, Malayalam), but have no OpenType language tags in the font. This doesn’t necessarily mean an omission on the part of the font designer, but rather that there is no language-specific functionality needed for the Malayalam script. By specifying a language with fontspec, it’s likely attempting to activate an OpenType feature that the font doesn’t contain. Try it again, omitting the language setting in fontspec. -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
