sick tim no node ?

edit

or did not source devel/setup.bash (or whatever your shell is)

that's more like it, because I get from the depository.

Weird! it seems that my source was somekind corrupted. I relaunch it using :

source /opt/ros/indigo/setup.bash

@TomSon: if you haven't setup your ~/.bashrc to do this for you, you'll have to source setup.bash in every new terminal you start.

Also: if @Stefan Kohlbrecher's answer solved your issue, please mark it as such by ticking the checkmark left of the answer.

@gvdhoorn It's weird because it's the only package (for now) that I have to do this (maybe it's a issue with my shell, I also use TMUX)

That would be strange indeed. I'd expect you'd have to do this always, or otherwise non of your ROS packages (installed in /opt/ros/indigo/.. would be found.