*** This bug is a duplicate of bug 484499 ***
https://bugs.launchpad.net/bugs/484499
The terminal log says:
/etc/default/grub: 28: Syntax error: EOF in backquote substitution
It seems that you've edited /etc/default/grub in a way that made its
syntax invalid. You need to edit it again and
** Attachment added: AptOrdering.txt
https://bugs.launchpad.net/bugs/653445/+attachment/1665699/+files/AptOrdering.txt
** Attachment added: Dependencies.txt
https://bugs.launchpad.net/bugs/653445/+attachment/1665700/+files/Dependencies.txt
** Attachment added: Df.txt