I am not sure what I did to cause the Design Gallery tab to go missing on the right-hand bar of the design screen, but I did Shift+F10 and also tried opening it again through Utilities--Galleries. It is enabled in the Utilities--Galleries Menu, but when I try to use File--New From Content Catalague, it tells me it is disabled.

What do I need to do to get it back.

Thanking you in advance for your help.