Can anyone tel me how to troubleshoot this?
Hi Francis!
Let's start with the basics, not because I think you are dumb but because I'm lazy and like to try to avoid dealing with hard stuff if possible ;¬)
There are three versions of ChucK for Linux for the three types of audio system. (OSS, ALSA, JACK). These are different executables. Could you verify which one you have? Typing "chuck --version" at your terminal should tell you this between brackets.
If you do have the right one the next step would be verifying that system works at all, for example by trying to make some sound using a different JACK application.
Also; I do think some of the pre-compiled version for various Linux distro's are lagging behind a bit and recent ChucK versions have made some quite relevant and fun updates. You may want to compile your own if you haven't done so already (this isn't clear from your mail), one of the added advantages of this is that you will be sure you have the right version (also not yet clear to me).
Well, at least it's a first step in figuring this out....
Yours,
Kas.