package grub-efi-amd64-signed 1.44+2.02~beta2-21 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

The whole system freezed, no keyboard mouse etc. Then i restarted it, no grub just the windows boots(dual boot system). Another drive was needed for reinstall the grub to the /dev/sda. Looks like that was a huge bug!

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: grub-efi-amd64-signed 1.44+2.02~beta2-21
ProcVersionSignature: Ubuntu 3.18.0-9.10-generic 3.18.2
Uname: Linux 3.18.0-9-generic x86_64
ApportVersion: 2.16-0ubuntu1
Architecture: amd64
Date: Fri Feb 6 23:34:31 2015
DuplicateSignature: package:grub-efi-amd64-signed:1.44+2.02~beta2-21:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.44+2.02~beta2-21 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)