Impossible to activate prepar 3d v 4.5. Everything perfect, download and installation, but when I click the activation box, it closes the programe and stops working. No message from windows cannot execute, nor error code or anything. I have followed all the technical recommendations for downloading and installation (run as administrator, no firewall, no antivirus, no usb, update all drivers, etc.) and I have not been able to find a solution after several days of many downloads and installations. Can anybody help me ?
Thank you