Not possible to create groups

Hello, I tried to add dials to my favorite webpages, but I can't do it, as I should select a group for the new dial. But there are no groups by default (???), and when I try to add a new one, and save it, i get to an endlessly circulating pocess indicator, but nothing happens for minutes, so I cancel it. But it means, I can not add a single dial... Well, it's a problem, considering it is a Dial extension...