If you are talking about missing your bookmark icon, then head over here. It's shows how to [[Customize Firefox controls, buttons and toolbars]]

Make sure that toolbars like the "Bookmarks Toolbar" are visible. *3-bar button > Customize > Show/Hide Toolbars *View > Toolbars<br>You can tap the Alt key or press F10 to show the Menu Bar *Right-click empty toolbar area Open the Customize window and set which toolbar items to display. *3-bar button > Customize *check that "Bookmarks Toolbar items" is on the Bookmarks Toolbar *if "Bookmarks Toolbar items" is not on the Bookmarks Toolbar then drag it back from the Customize palette into the Customize window to the Bookmarks Toolbar *if missing items are in the Customize palette then drag them back from the Customize window on the toolbar *if you do not see an item on a toolbar and in the Customize palette then click the <u>Restore Defaults</u> button in the Customize palette window to restore the default toolbar set. ---- You can check for problems with the <b>places.sqlite</b> database (bookmarks, history) in the Firefox profile folder. *https://addons.mozilla.org/firefox/addon/places-maintenance/ See also: *http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox *https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file