You might also check to see whether anything has changed in your environment recently. Have you installed a new machine with a new version of Windows? Has a new user been added to the network? Sometimes lack of sufficient "rights" may generate this message.

PS. Our records show that you're running Quik Check Plus for Windows. This product has been discontinued in favour of Adagio Checks, a 32-bit version of the same program with many new and improved features, including Backup from the File menu and re-designed reports to reduce the amount of paper.