A bit of more information, don't know if it would be useful:
After downloading the .bin files, the installer asked to install the software in my C:\Program Files(x86)\ folder. I changed that to my C:\Users\***name***\Documents\Prepar3D v4 Add-ons folder. Should I leave the installer to select my folder installation or not?. It's Ok to change the installation directory for the good behavior of the app?.
Another information: during the first start of P3D after the installation of GSX, I noticed that no warning about activation of a new addon appeared. Should I wait a message like this if the installation is Ok?.
Please indicate what to do now, as I cannot use the software due to these installation troubles.
Thanks, Ed