package base-files 7.2ubuntu11 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 2

system crashed during update from 14.10 to 15.10

In maintenance console ran :
dpkg --configure --pending
apt-get -f install
apt-get update && apt-get update
Reran Nvidia installation drivers

Finally opened my session, but a lors of error reporting popped up, including this one.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: base-files 7.2ubuntu11
ProcVersionSignature: Ubuntu 3.16.0-33.44-generic 3.16.7-ckt7
Uname: Linux 3.16.0-33-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Wed Jan 13 22:33:58 2016
Dependencies:

DuplicateSignature: package:base-files:7.2ubuntu11:le sous-processus script post-installation installé a retourné une erreur de sortie d'état 2
ErrorMessage: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 2
InstallationDate: Installed on 2016-01-13 (3 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120425-15:28
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: base-files
Title: package base-files 7.2ubuntu11 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 2
UpgradeStatus: Upgraded to wily on 2016-01-13 (3 days ago)