Am 24.05.2014 um 12:51 schrieb Werner Hintze <we.hintze@gmail.com>:

Thank you. But I still Don’t unterstand. I believe, I can write so:
\definefontfamily [myfamily] [serif] [Palatino]
\setupbodyfont[myfamily, 10pt]
But then I have no italics, bold or small caps.

Which system do you use?

When I use the default palatino font from OS X only the upright style is shown because

there is a bug in the fontloader when the font is in ttc or font format.

When I write only:
\setupbodyfont[palatino, 10pt]
all is well. What’ wromg here?