Problems running the source code of 1.0 video

[<vili.auvinen AT jyu.fi>]

Hi,

And first of all a huge thank you for this amazing technology. I'm really
looking forward to developing with this framework.

I'm trying to implement similar animations you have in your video; those 
little
dots moving in edges.

To do this, I would like to try your source code from the 1.0 video. However,
I'm having a problem running LeHavre.java
(http://graphstream-project.org/media/data/src-video-1.0.tar.bz2). I have
downloaded LeHavre.dgs file as well. Maybe it's a version problem since I use
the version 1.2 jars?

These are the messages I'm getting from method step():

entity-00000b8f nowhere
entity-000019eb nowhere
entity-00002eb5 nowhere
entity-00002ed2 nowhere
entity-0000325c nowhere
entity-000034a0 nowhere
entity-00003840 nowhere
entity-00003c61 nowhere
entity-00004afb nowhere
...

What might be the problem? Thanks in advance.