I successfully installed V6 over V5.029 on a test desktop PC but when I use the database tuner the PC crashes and there is a blue screen with a Fatal Error message. The PC only has 750 MB of RAM and this may be the cause of the crash. After all the anticipation of this version I am disappointed to read about problems users are reporting on other threads. I will follow Bert's lead and wait until AC can provide a stable version.