Custom Sidebars Buggy - getting caught up on itself

When inside the widget area creating a new sidebar it is very buggy and stalling out on me. I can get it to create a new custom sidebar --- but the loading roller just rolls and rolls. If I refresh the page there is a new sidebar area there. Then I try to click 'Sidebar Location' and again it just rolls and rolls. Grayed out I can see the settings behind the rolling icon, but it never opens and allows me to make adjustments.