I've been using Sage since the Simply Accounting Days. For I don't know how long that whenever I closed the app, whether I backup or not, it always returns the 'Database Engine Open Error' message. But then it will open again next time. In fact I just got a brand new computer, created a brand new company, in brand folders with brand new backup folders, and the same rubbish happens. Can the Sage-50 programmers tell us why?