I encountered a strange error. If the section name contains "iffer" then an error is produced, with some joke-like comments. Minimal example: \starttext \chapter{One} \section{iffer} \stoptext The original title was "Differentiating an integral" but I kept taking away until I got to "iffer". Michael Excerpt of log file: ConTeXt ver: 2012.10.05 19:52 MKIV fmt: 2012.10.5 int: english/english ... error: ...lone/tex/texmf-context/tex/context/base/font-otn.lua:347: Invalid field id components for node type disc (3) . system > tex > error on line 3 in file foo4580.tex: ? ... …. l.3 \section{iffer} ? ! I can't go on meeting you like this. ... l.3 \section{iffer} One of your faux pas seems to have wounded me deeply... in fact, I'm barely conscious. Please fix it and try again. ________________________________ This e-mail message (including any attachments) is for the sole use of the intended recipient(s) and may contain confidential and privileged information. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this message (including any attachments) is strictly prohibited. If you have received this message in error, please contact the sender by reply e-mail message and destroy all copies of the original message (including attachments).