package linux-image-3.19.0-18-lowlatency 3.19.0-18.18~14.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

success with kernel 3.19.0-031900 making my touchpad work. doing a new install same machine while making a youtube video re: using linux and problems w/ windows 8.1. used synaptic package manager... seeking that kernel. found 3.19.0.18 - installed "everything" listed. your bug report showed up. checking now... Phil - <email address hidden> - machine acer e-15 521 kh

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: linux-image-3.19.0-18-lowlatency 3.19.0-18.18~14.04.1
ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19
Uname: Linux 3.13.0-53-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
Date: Sun May 24 00:55:51 2015
DuplicateSignature: package:linux-image-3.19.0-18-lowlatency:3.19.0-18.18~14.04.1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2015-05-24 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: linux-lts-vivid
Title: package linux-image-3.19.0-18-lowlatency 3.19.0-18.18~14.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)