Adding a component to Dashboard error message

Adding a component to Dashboard error message

I am trying to add a component to my dashboard but keep getting the error message: 

"You do not have permission to view this dashboard because: 1. The corresponding module or field may have been disabled in your profile settings, OR 2. The module could be listed in the Unselected Tabs section in Setup > Customization > Modules > Organize Tabs."

I have organized my tabs, tried everything but cannot get the component added.  But last week it let me add one!  So very frustrating.  Any ideas?