"cannot load database"

[Hilary]

Recently my computer packed up, and I had to, erm, upgrade to Vista - something of a curate's egg among operating systems. UltraRecall is running fine, but every now and then it produces a new error message. 'Error opening file(s), cannot load database.' Or words to that effect. It sounds very alarming, but the database has been loaded and the files opened, and everything seems fine. So what's happening, and how worried should I be?