Another element, which might help or not : I just tried creating another package, using the ‘explorer’ functionnality to use the same document as one of the package that works – and it works : it’s the package called ‘Encore un essai’. This one displays.
I would thing it has something to do with the database, and an eventual corruption, but the downloads all work on the original wabsite…
One last thing : everything was working fine as of last Thursday. The only modifications after that were the addition of two plugins (Instagram Gallery, WonderPlugin Carousel) and a couple of css changes. I’ve already tried to deactivate the two plugins, to no avail.
I really do not know where to look, or what to test…