Host and load KML File in Flex project (IGN)

Question

Hi,

I'm looking at a tutorial to display placemarks using a KML file on a flex application. I'm using IGN API (openscales) in flex project.

The example works perfectly (http://openscales.org/userguide/examples/srcview/source/KMLExample.mxml.

<os:KML url="http://www.parisavelo.net/velib.kml"
                proxy="http://openscales.org/proxy.php?url="
                numZoomLevels="20"
                style="{Style.getDefaultCircleStyle()}"/>

But when I'm hosting the same kml file on my server like that :

<os:KML url="http://www.cycom.org/velib.kml"
                proxy="http://openscales.org/proxy.php?url="
                numZoomLevels="20"
                style="{Style.getDefaultCircleStyle()}"/>

Placemarks don't show up on the map. I tried to host the kml file on different hosts but that doesn't change. Do you have a clue ?

Thank you.