Today I discovered that the program was open on my husband's user desktop. Don't know why--- he doesn't use it, I do. So I logged onto my user and after investigating discovered that I cannot open the program using the shortcut, or even the regular button in the program file menu, but there is one that says "open as administrator" and if I use that I can open the program! Wasn't like this using Windows XP and Vectorworks 11. But at least I can open it!