[NTG-context] A change in textext Metafun maco?

Good noon. I have updated to the new ConTeXt and some of my documents failed to work. I use the FunnyFrame example from the Metafun manual. With the old ConTeXt all worked well. Now I can see in the title of a frame just "unknown". I played a little with the mpgraph.mp and I suspect the macro textext not to work well. Or in the same way as before. Where can be a bug? (Well, I updated only TeX, Metapost, and Perl part of ConTeXt and generated formats -- I didn't updated the ConTeXt stuff for plain or for LaTeX). Can you help me? Many thanks. Michal Kvasnicka