Dashboard loaded but the rest does not work - Upfront builder help

If I use the menu on the left for plug in or theme i get this message in the respective category "Cannot load wpmudev-themes." (OR PLUG IN ETC)

I went to the green button for upfront builder - went slick - straight install. On trying to activate it got a message saying missing a core (or base) upfront and provided a link - select the base template and say install - goes back to Cannot load wpmudev-themes.

Help!