Hi Barry,
Thanks a lot for your quick answer ! It seems that I’ve made a mistake in the URLs, actually the one that works is : http://www.detoursdescene.com/fiche-concert/cool-cavemen
Since this one works perfectly while it is strictly based on the same event template than the other event, I excluded -maybe too quickly- the “plugin conflicts” cause.
Anyway, I’ll have a look at the javascript issues and try reverting to a default theme to know more about this issue..
Thanks again for your help, I will tell you about it !