Have you tried exporting your bookmarks to an HTML file and then importing that file to the other computer?

You can open <b>about:sync-log</b> via the location bar to see if there are recent error logs available. You can upload a recent log if the log is too big to put in a reply. *https://pastebin.mozilla.org/ ---- You can check for problems with the <b>places.sqlite</b> database (bookmarks and history) in the Firefox profile folder. *https://addons.mozilla.org/firefox/addon/places-maintenance/ See also: *http://kb.mozillazine.org/Locked_or_damaged_places.sqlite *https://support.mozilla.org/en-US/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file