package grub-efi-amd64-signed 1.34.9+2.02~beta2-9ubuntu1.8 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück

Trusty nothing more than ROS - INDIGO to work with

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-efi-amd64-signed 1.34.9+2.02~beta2-9ubuntu1.8
ProcVersionSignature: Ubuntu 4.2.0-41.48~14.04.1-generic 4.2.8-ckt11
Uname: Linux 4.2.0-41-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
Date: Mon Jul 11 20:26:18 2016
DuplicateSignature: package:grub-efi-amd64-signed:1.34.9+2.02~beta2-9ubuntu1.8:Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
InstallationDate: Installed on 2016-04-21 (82 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.14
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.34.9+2.02~beta2-9ubuntu1.8 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
UpgradeStatus: No upgrade log present (probably fresh install)