OK, this didn't work. Log file attached.

   \usetypescript[palatino][texnansi]

  \switchtobodyfont[palatino]

  \starttext

  Hello World!

  \stoptext

This one worked.

 \usetypescript[adobekb][8r,ec]

  \usetypescript[palatino][ec]

  \switchtobodyfont[palatino]

  \starttext

  Hello World!

  \stoptext

Two questions:

1. I don't know why one worked and the other didn't. What files could I look at in my tex tree that would give a hint as to which to use?

2. How can I make the first one work?