This is beta: ConTeXt ver: 2012.07.09 22:35 MKIV fmt: 2012.7.9 int: english/english It fails me with (see below). I am fairly sure now this must be an error seeing the minimal example provided. Here is the most minimal example I could concoct: \setuphead[chapter][header=high] \starttext \chapter{c-one} \stoptext structure > sectioning > @ level 1 : 1 -> c-one ! Extra \else. system > tex > error on line 3 in file practicum.tex: Extra ... 1 \setuphead[chapter][header=high] 2 \starttext 3 >> \chapter{c-one} 4 \stoptext 5 6 \def\edition{2012} % the year of production 7 8 \disablemode[concept] % concept/final 9 10 \disablemode[docent] % typeset teacher info 11 12 \input setup % parameter settings 13 \setuppagenumbering[alternative=doublesided] \strc_sectioning_handle ...ioning_after_yes \else \ifconditional \c_strc_sec... l.3 \chapter{c-one} I guess the problem is signalled in strc-sec.mkiv where strc_sectioning_after_yes occurs in lines 780, 802 and 943, the first two seem the most likely candidates. I do not see at first hand a wrong \if\else\fi count there. Maybe the culprit hides elsewhere. Hans van der Meer