Hi, There was a question on TeX.SX about an error message http://tex.stackexchange.com/questions/200474/setuppagenumberinglocation-cau... The following MWE shows the same error \setupfootertexts[\namedheadnumber{chapter}] \setuppagenumbering[location=,alternative=doublesided] \starttext \completecontent \chapter{Creating device driver} \section{How to create the} Chapter text \stoptext which gives lua error > error on line 8 in file /tmp/test.tex: ...uild/src/tex/texmf-context/tex/context/base/strc-doc.lua:904: attempt to index field 'numbers' (a nil value) stack traceback: ...uild/src/tex/texmf-context/tex/context/base/strc-doc.lua:904: in function 'getsectionnumber' [\directlua]:1: in main chunk The error is weird because it only appears when all parts of the minimal example are present. If I comment either or `location=,` or `alternative=doublesided` or `\completecontent` or `\section{...}`, the error goes away! Any thoughts? Aditya