I've installed eZ Publish Community Project 2013.1 with eZDemo (without content).
I created my own Bundle (mainly design) in development environment.

In order to test my bundle in production environment, I executed this command:

php ezpublish/console assetic:dump

I get this error about ezdemo bundle (/web/bundles/ezdemo/css/all.css):

[Assetic\Exception\FilterException]
  An error occurred while running:
  '/opt/local/bin/node' '/tmp/assetic_lessxueYBP'

  Error Output:
  sh: 1: /opt/local/bin/node: not found