My bookmarks in the bookmarks toolbar have disappeared, I can no longer save a bookmark anywhere. Some of my bookmark folders have disappeared. I have tried restoring but I get the message "unable to process backup file"even after importing the file from my other laptop using both HTML files and .json files. I tried refreshing firefox, that didn't help. I uninstalled firefox and reinstalled it with the same results. Never had a problem with firefox before, but it's useless now! Can anyone help?