I've looked on the support page and tried those methods, but they don't work for me. I've also tried right clicking on the bookmark and selecting "delete" but nothing happens. If I open up something else, like the "show all bookmarks" option for example, afterwards I no longer have the option to "delete" the bookmark when I right click on it. Also, nothing comes up in the "show all bookmarks" menu. I can't click on the star anymore either in the address bar. It worked before but after I tried to delete the bookmarks that way the first time, it stopped working and now the little menu doesn't drop down.

This wouldn't bother me so much except for the fact that I synced my bookmarks bar with the ones from Safari and now I have duplicates on my Firefox one. I think I liked Firefox more before I got the update...