I have just activated Atahualpa 3 and have a problem with widgets. I cannot seem to add Search, Calendar, Archives, Links etc widgets to my sidebars. On the 'Widgets' tab of 'Appearance' on my dashboard they are shown as being used but do not show under current widgets left or right, or on my actual page.

Activate the theme you had before again, and remove the widgets out of its sidebars

Done that but problem persists in all themes now.