My firefox Diigo toolbar will not display any items to the left of the Highlight button. The missing items are the Open Sidebar, Diigo and Bookmarks buttons. I have tried unticking and reticking the show toolbar menu item, but they remain missing. I have the latest versions the toolbar (3.1.6.13) and Firefox installed. This problem has persisted over the last three toolbar upgrades. Nothing I do will make it display properly

Thanks Scott Allam, your advice has done the trick. I wonder what caused the buttons to disappear? No matter I have them back now, and I will know what to do if they disappear again. Thanks for your help.
Scott Allam wrote:
> Right click the Highlight button in the Diigo Toolbar. You should see a drop down menu that shows all of the available toolbars and a command at the very bottom called "Customize...". Choose customize.
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> You should get a dialogue box called "Customize Toolbar" with all of the available buttons for each of your toolbars. Locate the Diigo related buttons and click/drag them onto the Diigo Toolbar in the appropriate location. These buttons should be persistent and once you click done it should stay that way.
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> Hope that helps.