[Bug 1663007] [NEW] Bookmarks are gone and cannot be restored from backups or even from html file.

[seemas]

Public bug reported:

After I restarted my firefox, all Bookmarks has gone. 
Just before restart - there was a problem with firefox sync. I have logged in, but it had old bookmarks. Then I restarted and all bookmarks were gone and I cannot get them back.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: firefox 51.0.1+build2-0ubuntu0.16.04.2
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  seemas     2524 F.... pulseaudio
 /dev/snd/controlC1:  seemas     2524 F.... pulseaudio
BuildID: 20170201180315
Channel: Unavailable
CurrentDesktop: Unity
Date: Wed Feb  8 21:26:44 2017
Extensions: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
InstallationDate: Installed on 2016-11-23 (77 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Locales: extensions.sqlite corrupt or missing
Plugins:
 Google Talk Plugin Video Renderer - /opt/google/talkplugin/libnpo1d.so (google-talkplugin)
 Google Talk Plugin - /opt/google/talkplugin/libnpgoogletalk.so (google-talkplugin)
 Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=51.0.1/20170201180315 (In use)
RelatedPackageVersions: google-talkplugin 5.41.3.0-1
RunningIncompatibleAddons: False
SourcePackage: firefox
Themes: extensions.sqlite corrupt or missing
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/27/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: 9ECN26WW(V1.09)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lenovo Y50-70
dmi.board.vendor: LENOVO
dmi.board.version: 00000000Not Defined
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo Y50-70
dmi.modalias: dmi:bvnLENOVO:bvr9ECN26WW(V1.09):bd05/27/2014:svnLENOVO:pn20378:pvrLenovoY50-70:rvnLENOVO:rnLenovoY50-70:rvr00000000NotDefined:cvnLENOVO:ct10:cvrLenovoY50-70:
dmi.product.name: 20378
dmi.product.version: Lenovo Y50-70
dmi.sys.vendor: LENOVO

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1663007

Title:
  Bookmarks are gone and cannot be restored from backups or even from
  html file.

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