package linux-image-3.11.0-11-lowlatency 3.11.0-11.4 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 2

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ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-11-lowlatency 3.11.0-11.4
ProcVersionSignature: Ubuntu 3.8.0-31.23-lowlatency 3.8.13.8
Uname: Linux 3.8.0-31-lowlatency x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Thu Oct 17 23:43:26 2013
DuplicateSignature: package:linux-image-3.11.0-11-lowlatency:3.11.0-11.4:run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2013-10-06 (11 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: linux-lowlatency
Title: package linux-image-3.11.0-11-lowlatency 3.11.0-11.4 failed to install/upgrade: run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 2
UpgradeStatus: Upgraded to saucy on 2013-10-17 (0 days ago)