I can see and use previously bookmarked pages from the Bookmarks bar. The bookmarks library folder, however is empty. I cannot import or restore bookmarks to it, and it will not save new bookmarks. In fact, the "Add bookmarks" does not list any folders in which to file new bookmarks. I tried trashing Firefox and downloading a new version. Didn't solve it. I searched the troubleshooting resources and the only help I found suggested opening the Profile folder to delete possibly corrupted files such as places.sqlite but can't find any such folder or files on my hard drive. Help! Thank you!