I've recently lost access to the widget areas and the sidebar has disappeared from my site. I've tried deactivating any plug-ins and switching to the WordPress Twenty-eleven theme, but neither of these have made a difference.
When I go to the admin widget menu, there are no sidebar areas shown and I can't access the screen options drop down menue either. I made sure that the layout that I've selected is the "content on the left, right sidebar layout."
This seems to have happened out of the blue. Does anyone have any advice? I'm completely stumped.