"Open All in Tabs" don't work with FF4 Rated 5 out of 5 stars

Great add-on!
On Firefox 3.6.15 works perfect, but on Firefox 4 (final), the menu "Open All in Tabs" don't work on PlainOldFavorites 1.1.2. Can you fix it please?
Thanks!

This review is for a previous version of the add-on (1.1.2).