Hello Umberto,
I have GSX, KLAS among other FSDreamteam airports installed into Prepar3D v3.4. Do I uninstall GSX and the other airports first? Then use the new installer for P3D v4? Or Do I just run the installers for GSX, KLAS and such? I have looked for instructions via this forum on how to exactly put my FSDreamteam add-ons into P3D v4. I searched for a while and I apologize if I have missed (I'm sure it's was posted somewhere).
Thank you for your help!
Btw...I love your products!