Thanks for your quick answer ??
That’s right for lightbox, but I prefer when it’s inactive, so mobile visitors can easily download pictures (if you know a way to make it possible with LB, I’m interested too).
I just tried to shut down plugins that are not necessary for the blog, but I’ll try at night -when the website will be under maintenance- to shut does all others plugins to see if one of them can make conflict…
I’ve already tried to deactivate and reactivate AJAX pagination, but it still doesn’t work…