I just installed the 64 bit version of Firefox nightly on my laptop. My old FF was hanging up and I couldn't get it to work no matter what I did. Everything is fine now with the 64 bit version except that it did not import my bookmarks. I was able to import my bookmarks from IE but it is missing a few sites that I really need for work. Any idea where I can find my old bookmarks? I did not uninstall the old version. Both versions of Firefox exist in different folders but the new version starts no matter which .exe file I open. The old version wouldn't start anyway or I would have made a backup before the problem. I did find backup bookmarks files in a folder called "Bookmarkbackups". The files are named "Bookmark-2013-02-11.json" I think all I need to know is how to replace this backup with the current file. Any ideas?