FF - version 51.0a2 (DevEdition) Build - ID 20161112004002 OS - Linux After starting the program install the update and swore at something-tab.js. Sorry, no screenshot. Then refused to open the content pages. That is, after start Firefox opens all the tabs. But they are empty. Only with the title "new tab". What I did: 1) start browser with disabled extensions, 2) cleaned the browser (refresh Firefox), 3) tried to restore the session (thru sessionstore-backup), but FF resets the address data to "url":"about:blank" for every tabs, 4) created a new profile and tried to add data from old profile sessions. The result is zero! Need help... How to restore tabs?