Quando vado a installare un componente ( Lingua Italiana )
mi dice "Impossibile installare componenti! Assicurarsi che sia un pacchetto valido."
Congratulations: It seems you've got it made. :)
"Italien Language" is not a component but a language pack. And language packs have to be installed manually. Check the structure of the zip archive: You'll find all corresponding directories in your OSSN installation. Simply make sure to move each of those ossn.it.php files to the right place via ftp.
A little more intelligent and faster way would be to unzip the archive locally, rename the top directory "italien" to the name of your OSSN installation directory, re-zip it, move it to your server and unzip it there.
Due to the many requests in the past for additonal features and components we have decided to develope a premium version. Features like Hashtags, Videos, Polls, Events, Stories, Link Preview, etc included in it.
$199 (Life Time)