When you click on "Help"....do you get a small screen that gives the new features of VMS10? If so, in the upper left hand corner of the screen, there is a "show" or "Hide" button. It must have inadvertently been set to "Hide". and now shows as "Show".
Click on "show"...and it should give you your contents and index.
This sounds confusing....but you'll see it when you click on the Help button.

lcdrdan