Rated 5 out of 5 stars
have got this working firefox12 but ONLY with all-in-one sidebar bookmarks(new ones ok previous need refresh-I opened dozens at a time ok).if use avg antivirus ensure plugin container is Not removed. Back up firefox. First download & save .xpi file to a folder from http://bookmarkpreviews.mozdev.org/installation.html then in about:config create new boolean extensions.checkcompatibility.12.0 & set to false(see example:http://www.ghacks.net/2011/11/12/firefox-10-aurora-released-how-to-force-add-on-compatibility/ Then carry out edit of .xpi(see:http://www.techsupportalert.com/content/how-update-firefox-thunderbird-addons-n. I used *.* This method could work with other firefox builds(?)This user has other reviews of this add-on.