Hi Jarek,
This is not expected. Is this error displayed in the browser? Or did
you try to compile less in terminal?
Although at Centage website I claim that it could be converted to CSS
with terminal, it clearly doesn't. I admit not testing it before.
Clearly less.js has more evolved syntax and is not fully compatible
with less.
So forget about compiling less in terminal (if that's what you tried)
and instead either compile it with
less.app http://incident57.com/less/
or maybe give Dotless a try
http://www.dotlesscss.org/.
If you'd like to, I can take a look at your setup.
- Jussi