I am having difficulties writing a typescript for the Caslon font that's on my system. The following works: \definetypeface[Caslon-Bold][rm][Xserif][CaslonOldFaceBT-Heavy] \definetypeface[Caslon-Italic][rm][Xserif][CaslonOldFaceBT-Italic] \definetypeface[Caslon-Regular][rm][Xserif][CaslonOldFaceBT-Roman] \starttext Testing \switchtobodyfont[Caslon-Regular] Testing \switchtobodyfont[Caslon-Bold] Testing \switchtobodyfont[Caslon-Italic] Testing \stoptext However, I tried to write a simple typescript for the same font. I came up with the following: \starttypescript[serif][caslon][uc] \definetypeface[CaslonRegular][CaslonOldFaceBT-Roman][encoding=uc] \definetypeface[CaslonItalic][CaslonOldFaceBT-Italic][encoding=uc] \definetypeface[CaslonBold][CaslonOldFaceBT-Heavy][encoding=uc] \stoptypescript \starttypescript[serif][caslon][name] \definefontsynonym [Serif] [CaslonRegular] \definefontsynonym [SerifItalic] [CaslonItalic] \definefontsynonym [SerifBold] [CaslonBold] \stoptypescript \starttypescript[caslon][uc] \definetypeface[caslon][rm][serif][caslon][default][encoding=uc] \stoptypescript \usetypescript[caslon][uc] \setupbodyfont[caslon, 12pt] \starttext Testing {\bf Testing} {\it Testing} \stoptext It fails to compile on the \setupbodyfont line. I know I'm doing something wrong, but every variation I've tried ends up with a compile error, or the caslon font is never loaded and it reverts back to the default font.