OK I thought this.
My hoster just says me :
Quote:If you study the source code about your error message (available here : http://www.zenphoto.org/trac/attachment/ticket/1776/index.php), you can see that this message is due to the absence of some files that Zenphoto needs to run properly
You should check your installation.
Are we agree he's wrong ? No files are missing.
That also why I thing it's more a bad interaction in beetwen the hoster and a Zenphto (as other sripts runs on these hoster and as i run other zenphoto on other hoster).
Anyway, if files were really missing I thing that it should works or NOT but not works time to time. Am I right ?
Thanks again and if I can't find solution I will move my zenphoto to another hoster.
But finally this is something that could be interresting to underdant because it suppose that Zenphoto needs to checks some points to be sure it will run on an hoster (once again other scripts like Wordpress runs with no problem on this hoster with the same database).