Hello . I have recently purchased the GSX license which I have regularly installed on FSX. After the activation with the serial sent to me everything worked. Unfortunately, I had a problem with the simulator and I had to reinstall it, both FSX and GSX. Unfortunately, after the re-installation it doesn't work. At the end of the installation of GSX I get the message that I am attaching as a screen shot. Practically when I have to register the product I get the screen with the serial already written, but giving the ok nothing happens, GSX remains in Trial mode. What could have happened? Maybe the serial is no longer suitable? Among other things, I wanted to buy the L.2 expansion but it won't let me do it if I don't activate GSX first. Possible that I have to buy it back after less than three months, just because I had to reinstall? I will be grateful if you will help me.