No characters at all

When I try to run Ardour on my Mac OS X 10.4.5, i get this screen:

http://samu.ki.iif.hu/ardour.jpg

I don’t know what to do…

Several people have reported this. There is some font problem with non-english computers. If you temporarily set your locale to be english, the characters will appear. We’re still looking into the best fix for this.

how can i set this locale?