Hi,
I found '\definetypeface' can not work with beta 2010.02.24.
This is a minimal example:
\starttypescript[serif][test]
\definefontsynonym[Serif][name:texgyrepagella]
\stoptypescript
\definetypeface[myfonts][rm][serif][test][default]
\setupbodyfont[myfonts]
\starttext
Hello world!
\stoptext
--
Best regards,
Li Yanrui