Do you mean the tabs? If so, are you sure you haven't inadvertently dragged the splitter bar all the way to the bottom? Try hovering your mouse just below the horizontal scroll bar below the folder list. If the icon changes to a double line with two arrows pointing up and down from it, click and drag upward.
Yes I am talking about the tabs Preview data card---- I can move it up and down but there are no tabs there.
Problem solved. Had to unistall remove the Reg files and reinstall. Did the unistall without removing the reg files and that did not work. Had to do a clean sweep.