I've searched about the solution, but no one found wich works. After the update to 3.5.2 version, on my multisite installation i'm not able to add new sites anymore. WP gives me "impossible to create the site" error, without any information more. In "all sites" secton it appears, but no subdir added in my blogs.dir, no mails sent, and 404 error when I try to view it.
I've tried to desactivate all the plugins, but I have the same error.
Someone can help?
Thanks a lot