Drag and drop in newly created region is disabled

Hi- I am trying to add a region I have called Callus. I have been able to add the region, but when I try to drag one of the dragable elements onto the layout, I see the hand as though it were able to grab, but am not able to drag it over to the layout.
I am sure there is a simple step that I am missing, please help.
Thank you.
Becky