Can't bookmark a page in Firefox I haven't been able to bookmark a page using keyboard shortcut command + D or star icon in the address bar for about a month.

At first, I assumed this shortcut might've been removed in upgrade to version 25.0.1, 26 or 27.0.1 but after going through their change log at http://www.mozilla.org/en-US/firefox/releases/ I couldn't find any of that.

Is there a way to troubleshoot this without losing my existing bookmarks?
I was able to resolve this by exporting the bookmarks as shown here:
https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

(suggested by @dwightk )

Exporting my passwords using password export addon 
http://addons.mozilla.org/en-US/firefox/addon/password-exporter 

and then re-installing firefox.