I just pushed out v0.9.2.1 to address issues with some of the included translations — they were breaking WP-United. The update makes WP-United more resilient to breakage.
There’s also a new widget in there too: The Forum Footer Bar widget (to match the Header Bar widget). Thanks to *daniel for doing the initial work on that one.
You can upgrade at the WordPress upgrade prompt. It should be a one-click upgrade; there’s nothing else to do.