The latest beta — ConTeXt ver: 2017.02.19 with LuaTeX, Version 1.0.3 — chokes on entries such as \cite[author1, author2, and author3 2017] and reports an error: e.g., lua error > lua error on line 81 in file c_Brill09-02_Evans.tex: C stack overflow stack traceback: [C]: in function 'type' ...eXt/tex/texmf-context/tex/context/base/mkiv/lpdf-ini.lua:373: in function <...eXt/tex/texmf-context/tex/context/base/mkiv/lpdf-ini.lua:367> [C]: in function 'tostring' ...eXt/tex/texmf-context/tex/context/base/mkiv/lpdf-ini.lua:342: in function <...eXt/tex/texmf-context/tex/context/base/mkiv/lpdf-ini.lua:317> If I try something like \cite[A B and C] all is well. Adding the commas as in \cite[A, B, and C] gets the error. Sadly, I need the commas. Alan