Hi all, Has anyone encountered the following situation with the betas from last January until today? I have a document some 100 pages (each page being an \input), which is correctly typeset with ConTeXt version 2011.11.29 mkiv, but gives me the following error with the recent mkiv betas: the message is <to be read again> } <inserted text> ...onstructionparameter \c!level } \setevalue {\??constructio... \define_construction ... \everydefineconstruction \let \currentconstruction ... <inserted text> ...r =\v!description ,\c!level =1] \else \defineconstruction ... \define_description ...he \everydefinedescription \let \currentdescription \... <to be read again> \startpacked … In order to localize the error I have tried to add little by little my \input files, and everything works when I have about 20 pages… I am reporting this issue just for debugging reasons, since for the real project I still use the 2011.11.29 version. Indeed I should apologize since I am not able to submit a minimal example, my project itself being somewhat complex (at least from my perspective… not for a guru!). Also, I should say that in recent previous betas the error message was different, but I have not anymore those versions to report what the exact message was. Thanks for any insight: OK