Dear Aditya and Thomas, Using the simpleslides seems impossible with the latest beta (ConTeXt ver: 2012.01.25 14:16 MKIV fmt: 2012.1.31): mkiv stops with a « fatal error » on this minimal test: %%%%% begin fatal-test.tex \setupinteraction[state=start] \usemodule[simpleslides] [style=Swoosh, font=Palatino, size=17pt, color=red, alternative=stripe] \setupTitle [title={Why fatal error?}, date={11 février 2012}, ] \starttext \placeTitle \stoptext %%%%%%%% end fatal-test.tex Is there a solution? Thanks in advance: OK PS: The error message says: ! TeX capacity exceeded, sorry [expansion depth=10000]. system > tex > error on line 81 in file presentation-test.tex: TeX capacity exceeded, sorry [ ... \moduleparameter #1#2->\csname \??module \ifcsname \??module #1:#2\endcsname... \moduleparameter ...?module \ifcsname \??module #1 :#2\endcsname #1:#2\fi \en... \moduleparameter ...?module \ifcsname \??module #1 :#2\endcsname #1:#2\fi \en... \moduleparameter ...?module \ifcsname \??module #1 :#2\endcsname #1:#2\fi \en... \moduleparameter ...?module \ifcsname \??module #1 :#2\endcsname #1:#2\fi \en... \moduleparameter ...?module \ifcsname \??module #1 :#2\endcsname #1:#2\fi \en... ... l.81 ! ==> Fatal error occurred, no output PDF file produced! mtx-context | fatal error: return code: 1