Hi, Please check if this happens in [https://support.mozilla.com/en-US/kb/Safe%20Mode Safe Mode]. [http://kb.mozillazine.org/Problematic_extensions Problematic Extensions] [https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes Troubleshooting Extensions and Themes] [http://support.mozilla.com/en-US/kb/Uninstalling+add-ons Uninstalling Add-ons] [http://kb.mozillazine.org/Uninstalling_toolbars Uninstalling Toolbars]

Hi, it persists in safe mode as well. While there is no bookmark toolbar, it still crashes when i right click a bookmark.

The bookmarks + history data are stored in the '''places.sqlite''' file in the [http://kb.mozillazine.org/Profile_folder Firefox Profile Folder]. It may be corrupted. You can try deleting it after exiting Firefox. There is also a separate dated backup of the bookmarks in the '''bookmarks''' folder and you can restore the latest backup via '''Bookmarks''' ('''Alt''' + '''B''') > '''Show All Bookmarks''' > '''Import and Backup''' > '''Restore''' after restarting Firefox. Alternatively from here you can also '''Export Bookmarks to HTML''' before deleting the places.sqlite file and later '''Import Bookmarks from HTML'''. [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder & Files] [https://support.mozilla.org/en-US/kb/Backing-up-restoring-bookmarks Bookmarks Backup] [https://support.mozilla.org/en-US/kb/Importing%20Bookmarks%20from%20an%20HTML%20File Importing from HTML]