grub-pc fails to upgrade to 2.02~beta2-9ubuntu1.12

Tried to make a normal upgrade today but apt-get always hangs on grub-pc. I killed all the processes forced the lock open manually again and tried 'dpkg reconfigure -a' and 'sudo dpkg -i /var/cache/apt/archives/grub-pc_2.02~beta2-9ubuntu1.12_amd64.deb' and e new 'apt-get upgrade' always with the same result, that is hanging while configuring. Dmesg shows nothing special. Only hint on was is going wrong is coming if I try to reinstall the package:

sudo apt-get install --reinstall grub-pc
[sudo] password for <user>:
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 14 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
E: Internal Error, No file name for grub-pc:amd64

Addiotionall thing you like:
lsb_release -rd
Description: Ubuntu 14.04.5 LTS
Release: 14.04

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: grub-pc 2.02~beta2-9ubuntu1.12
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
Date: Tue Aug 16 10:33:25 2016
InstallationDate: Installed on 2014-09-01 (715 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: grub2
UpgradeStatus: No upgrade log present (probably fresh install)