Virtuali,Umberto,
Many thanks for the help.
I desactivate my Antivirus during the product download, during opening of the Installer zip file and during the scenery installation and of course afterwards during
the Stand-Alone Manager updating and the installation was successful.
By the way, I want the scenery for the Lugano airport. Everything is perfectly integrated with FSGenesis newest mesh and the airport is much better than th "Flylogic Lugano" !