[CM] beginner's issues

[menno]

Hello Mr. Taube

i have a beginner's question about getting common music/Grace to work.

I saw this article: http://www.linuxjournal.com/content/algorithmic-music-composition-linux-part-1 that peaked my interest
and decided to start with common music for score generation for Csound.
I fired up Grace/common Music 3.6.0 on Ubuntu, using Jack. I got this error:
>>>> Error: end: unbound variable.
What can this be?
Thank you.