airportCache=0 doesn't exist as a known command, so it's best to remove it. Your log doesn't show any particular issues, other than you tried opening the menu and you exited the sim after it started.
Page 97 of the manual lists all the possible reasons and all the known solution that has been proven to work. If you tried them ALL, and none of them worked, is it possible you manually copied the two GSX packages in the Community folder, maybe because your G: drive is not formatted in NTFS ?
