\def\ChapterCommand#1#2#3{#1 #2 #3}% \setuplist[chapter] [alternative=command, command=\ChapterCommand] \starttext \placecontent \startpart[title=aaa] \startchapter[title=bbb] \startsection[title=ccc] \input knuth \stopsection \stopchapter \stoppart \stoptext ! Argument of \ChapterCommand has an extra }. Perhaps *** strc-lst.mkvi.new 2012-01-26 16:47:46.000000000 +0100 --- strc-lst.mkvi 2012-01-23 19:44:00.000000000 +0100 *************** *** 755,757 **** \startsetups[\??listrenderings:\v!command] ! \def\p_command{\listalternativeparameter\c!command}% \ifx\p_command\empty --- 755,757 ---- \startsetups[\??listrenderings:\v!command] ! \edef\p_command{\listalternativeparameter\c!command}% \ifx\p_command\empty -- luigi