I apparently had both the 32 bit and 64 bit versions on my computer because I upgraded from Win7 to Win10 (installing both version was not intentionally done and did not know about it until the following). Every time I tried to open FF it would crash. My research disclosed that both versions was installed and guessed that was cause of the crash. Deleted 32 bit version -- after that, FF loaded and I gave it no more thought. I think the bookmarks were there. Turned off Computer and went home. Next morning after bootup and opening FF discovered no bookmarks. Tried booksmarks tool - it appears that it added the new bookmarks -- but the link does not appear anyware that I can find on toolbar. So still no bookmarks. Tried about:profiles -- shows a number of default profiles, but when I double-click on them all that happens is the opening of the links -- it does not substitute the default profile.