Yes i made several reset, exclusions, inclusions, vera reset and clear EPROM but nothing worked... I made a new sensor and it works perfectly Strange... I will try again when i will have more time. Thanks for the help :D

@rvendrame I have this issue with my Arduino Pro 5v's, (which I bought from the link in the MySensors store page). The only fix I have found is to manually define to node for those sensors. Annoying, but it works.