krileon wrote: 403 is a forbidden error. Check your server error logs. It sounds like probably mod_security blocking uploads (bad filename?) or you've a 403/404 redirect setup in htaccess maybe.
Yes
If I had in htaccess the address to custom errors 403 and 404.html, I deleted it
I also deleted all the browser cache
Now it seems that if it works,
I will be observing it these days.
thanks