hi, wolfgang.schuster

  Thank you!

   I wanted to try Adobe Song Std, but when executing the command:

mtxrun --script fonts --reload

I got the error:

fonts           | names | adding path from OSFONTDIR: /study/context/fonts

fonts           | names | globbing path /study/context/fonts/**.otftexlua: ../../../source/texk/kpathsea/cnf.c:255: 

kpathsea_cnf_get: Assertion `kpse->program_name' failed.

my versions are:

context  2013.01.08 01:19

luatex: beta-0.74.0-2012122510

your versions are different?