update keeps failing

installArchives() failed: (Reading database ...
dpkg: warning: files list file for package `thunderbird' missing, assuming package has no files currently installed.

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(Reading database ... 220467 files and directories currently installed.)
Preparing to replace unity 5.18.0-0ubuntu1 (using .../unity_5.18.0-0ubuntu2_amd64.deb) ...
Unpacking replacement unity ...
Preparing to replace libunity-core-5.0-5 5.18.0-0ubuntu1 (using .../libunity-core-5.0-5_5.18.0-0ubuntu2_amd64.deb) ...
Unpacking replacement libunity-core-5.0-5 ...
Preparing to replace unity-services 5.18.0-0ubuntu1 (using .../unity-services_5.18.0-0ubuntu2_amd64.deb) ...
Unpacking replacement unity-services ...
Preparing to replace unity-common 5.18.0-0ubuntu1 (using .../unity-common_5.18.0-0ubuntu2_all.deb) ...
Unpacking replacement unity-common ...
Preparing to replace gnome-settings-daemon 3.4.2-0ubuntu0.6.1 (using .../gnome-settings-daemon_3.4.2-0ubuntu0.6.2_amd64.deb) ...
Unpacking replacement gnome-settings-daemon ...
Preparing to replace unity-greeter 0.2.8-0ubuntu1.4 (using .../unity-greeter_0.2.9-0ubuntu1_amd64.deb) ...
Unpacking replacement unity-greeter ...
Processing triggers for gconf2 ...
Processing triggers for libglib2.0-0 ...
Processing triggers for hicolor-icon-theme ...
Setting up lightdm (1.2.3-0ubuntu1) ...
dpkg: error processing lightdm (--configure):
 subprocess installed post-installation script returned error exit status 10
Setting up man-db (2.6.1-2ubuntu1) ...
dpkg: error processing man-db (--configure):
 subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of ubuntu-standard:
 ubuntu-standard depends on man-db; however:
  Package man-db is not configured yet.
dpkg: error processing ubuntu-standard (--configure):
 dependency problems - leaving unconfigured
Setting up checkbox (0.13.9) ...
No apport report written because the error message indicates its a followup error from a previous failure.
Traceback (most recent call last):
  File "/usr/share/checkbox/install/config", line 162, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/share/checkbox/install/config", line 156, in main
    install.write(file)
  File "/usr/share/checkbox/install/config", line 122, in write
    new_value = self._debconf.get(question)
  File "/usr/lib/python2.7/dist-packages/debconf.py", line 60, in <lambda>
    lambda *args, **kw: self.command(command, *args, **kw))
  File "/usr/lib/python2.7/dist-packages/debconf.py", line 96, in command
    raise DebconfError(status, data)
debconf.DebconfError: (10, "checkbox/plugins/apport_prompt/default_enabled doesn't exist")
dpkg: error processing checkbox (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of checkbox-qt:
 checkbox-qt depends on checkbox (>= 0.13.9); however:
  Package checkbox is not configured yet.
dpkg: error processing checkbox-qt (--configure):
 dependency problems - leaving unconfigured
Setting up grub-pc (1.99-21ubuntu3.9) ...
No apport report written because MaxReports is reached already
No apport report written because MaxReports is reached already
dpkg: error processing grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 10
Setting up unity-services (5.18.0-0ubuntu2) ...
No apport report written because MaxReports is reached already
Setting up libunity-core-5.0-5 (5.18.0-0ubuntu2) ...
Setting up unity-common (5.18.0-0ubuntu2) ...
Setting up unity (5.18.0-0ubuntu2) ...
Setting up gnome-settings-daemon (3.4.2-0ubuntu0.6.2) ...
Setting up unity-greeter (0.2.9-0ubuntu1) ...
dpkg: dependency problems prevent configuration of ubuntu-desktop:
 ubuntu-desktop depends on checkbox-qt; however:
  Package checkbox-qt is not configured yet.
 ubuntu-desktop depends on lightdm; however:
  Package lightdm is not configured yet.
dpkg: error processing ubuntu-desktop (--configure):
 dependency problems - leaving unconfigured
Processing triggers for libc-bin ...
No apport report written because MaxReports is reached already
ldconfig deferred processing now taking place
Errors were encountered while processing:
 lightdm
 man-db
 ubuntu-standard
 checkbox
 checkbox-qt
 grub-pc
 ubuntu-desktop
Error in function:
SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Setting up man-db (2.6.1-2ubuntu1) ...
dpkg: error processing man-db (--configure):
 subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of ubuntu-standard:
 ubuntu-standard depends on man-db; however:
  Package man-db is not configured yet.
dpkg: error processing ubuntu-standard (--configure):
 dependency problems - leaving unconfigured
Setting up checkbox (0.13.9) ...
Traceback (most recent call last):
  File "/usr/share/checkbox/install/config", line 162, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/share/checkbox/install/config", line 156, in main
    install.write(file)
  File "/usr/share/checkbox/install/config", line 122, in write
    new_value = self._debconf.get(question)
  File "/usr/lib/python2.7/dist-packages/debconf.py", line 60, in <lambda>
    lambda *args, **kw: self.command(command, *args, **kw))
  File "/usr/lib/python2.7/dist-packages/debconf.py", line 96, in command
    raise DebconfError(status, data)
debconf.DebconfError: (10, "checkbox/plugins/apport_prompt/default_enabled doesn't exist")
dpkg: error processing checkbox (--configure):
 subprocess installed post-installation script returned error exit status 1
Setting up grub-pc (1.99-21ubuntu3.9) ...
dpkg: error processing grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 10
Setting up lightdm (1.2.3-0ubuntu1) ...
dpkg: error processing lightdm (--configure):
 subprocess installed post-installation script returned error exit status 10
dpkg: dependency problems prevent configuration of checkbox-qt:
 checkbox-qt depends on checkbox (>= 0.13.9); however:
  Package checkbox is not configured yet.
dpkg: error processing checkbox-qt (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of ubuntu-desktop:
 ubuntu-desktop depends on checkbox-qt; however:
  Package checkbox-qt is not configured yet.
 ubuntu-desktop depends on lightdm; however:
  Package lightdm is not configured yet.
dpkg: error processing ubuntu-desktop (--configure):
 dependency problems - leaving unconfigured