On Sun, 10 Jun 2012, Alfredo Catalina wrote:

>> \setupbodyfont[pagella,11pt]
>>
>> %\setupMPinstance[metafun][textstyle=sans]
>> \setupMPinstance[metafun][textstyle={\switchtobodyfont[termes,14pt]}]
>>
>> \starttext
>>
>> \input knuth
>>
>> \startMPcode
>> draw textext("I’m different!") ;
>> \stopMPcode
>>
>> \stoptext
>>
>>
>>
>
> It gives an error:
>
> ! Undefined control sequence.
> system          > tex > error on line 1 in file GeneraMapa.tex: Undefined
> control sequence ...
> 1 >>  \setupMPinstance[metafun][textstyle={\switchtobodyfont[termes,14pt]}]
> 2
> 3     \setuppagenumbering[location=]
> 4     \starttext
> 5     \input ./mapa.tex
> 6     \useMPgraphic{mapa}
> 7     \stoptext
> 8
> l.1 \setupMPinstance
>                    [metafun][textstyle={\switchtobodyfont[termes,14pt]}]
> ?

You need to upgrade your ConTeXt installation.

Aditya