sorry I didn't notice your post before.
C4F Textarea Toolbar needs two features in your template in order to work:
The theme you are using now has the id "comment" and it looks like the wp_head call is in place, so the question is: were you using this very theme you are using now back when you tried C4F Textarea Toolbar?
Or maybe you didn't have those two features in your theme back then?
If you are still interested in making it work and maybe help other who might have a similar problem, hit back.