[NTG-context] current beta gives error with m-subsub

Hi, since summer I didn't update context, today I did. Unfortunately this results in an error (when using module m-subsub): system : module m-subsub loaded (/usr/local/texlive/2008/../texmf-local/tex/context/base/m-subsub.tex system : mark subsubsubsubsubsection defined [subsubsubsubsubsection] system : mark subsubsubsubsubsectionnumber defined [subsubsubsubsubsec tionnumber] ! Undefined control sequence. <argument> \v!subsubsubsubsubsubsection What's wrong? Steffen