Hello, After the upgrade to latest beta (from 08.08 21:28), I cannot load many of my Persian fonts (one uploaded here http://mhbateni.com/context/bug-03/ for testing). It works on "current" without any issues but not on "beta". Find an MWE as well as the error message below. (I did test on a fresh standalone version as well.) \starttext \definedfont[HMXNiloofar*arabic] Salam \stoptext ...ext/tex/texmf-context/tex/context/base/mkiv/font-ots.lua:3764: attempt to index field '?' (a nil value) stack traceback: ...ext/tex/texmf-context/tex/context/base/mkiv/font-ots.lua:3764: in function 'action' ...ext/tex/texmf-context/tex/context/base/mkiv/font-con.lua:1407: in function 'initializefeatures' ...ext/tex/texmf-context/tex/context/base/mkiv/font-otl.lua:263: in function 'setfeatures' ...ext/tex/texmf-context/tex/context/base/mkiv/font-otl.lua:557: in function 'otftotfm' ...ext/tex/texmf-context/tex/context/base/mkiv/font-otl.lua:566: in function <...ext/tex/texmf-context/tex/context/base/mkiv/font-otl.lua:565> (...tail calls...) ...ext/tex/texmf-context/tex/context/base/mkiv/font-def.lua:316: in function 'loadfont' ...ext/tex/texmf-context/tex/context/base/mkiv/font-ctx.lua:492: in function 'loadfont' ...ext/tex/texmf-context/tex/context/base/mkiv/font-def.lua:418: in function 'read' ...ext/tex/texmf-context/tex/context/base/mkiv/font-ctx.lua:1175: in function <...ext/tex/texmf-context/tex/context/base/mkiv/font-ctx.lua:1062> 1 \starttext 2 >> \definedfont[HMXNiloofar*arabic] 3 Salam 4 \stoptext 5 Thanks! —MHB