Open layout view to insure the tabs are still there. You have objects overlaping the tabs which may be causing the problems:
The photograph, the List Of objects and it looks like something overlaping at the bottom.
This is typical of what happens when you resize a tab and make it smaller than one or more objects inside the tab. They pop to the top, so to speak.
I'd suggest duplicating the layout and pull the tabs apart, etc, and then redo them so nothing overlaps or is outside the tab area.
Very foolish of me - I had not updated to FMPro v11. Once I did that all was well. Thank you for your response. Hearing of your thoughts makes me learn so much more about how to design layouts.