package libreoffice-style-elementary 1:5.1.6~rc2-0ubuntu1~xenial2 failed to install/upgrade: package libreoffice-style-elementary is already installed and configured

asus m4n78pro mb. AMD quad-core K620 video card.
doesn'tlike procesor drivers, or nVidia drivers. Works OK otherwise. Updates not coming through. No errors, spinning wheel forever.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libreoffice-style-elementary 1:5.1.6~rc2-0ubuntu1~xenial2
ProcVersionSignature: Ubuntu 4.4.0-66.87-lowlatency 4.4.44
Uname: Linux 4.4.0-66-lowlatency x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 600:109:116:0:2017-05-25 22:18:37.236803815 -0400:2017-05-25 22:18:37.236803815 -0400:/var/crash/libnss3:amd64.0.uploaded
 644:0:116:0:2017-05-25 22:18:33.991769977 -0400:2017-05-25 22:18:33.991769977 -0400:/var/crash/libnss3:amd64.0.upload
 640:0:116:554068:2017-05-25 22:18:31.039749622 -0400:2017-05-25 22:18:33.992769988 -0400:/var/crash/libnss3:amd64.0.crash
 600:0:116:170332:2017-05-25 22:15:24.883808374 -0400:2017-05-25 22:15:25.883808374 -0400:/var/crash/libreoffice-style-elementary.0.crash
 600:0:116:170291:2017-05-25 22:15:25.834807921 -0400:2017-05-25 22:15:24.830797452 -0400:/var/crash/libnss3-nssdb.0.crash
Date: Thu May 25 22:15:25 2017
DuplicateSignature:
 package:libreoffice-style-elementary:1:5.1.6~rc2-0ubuntu1~xenial2
 Unpacking amd64-microcode (2.20160316.1) ...
 dpkg: error processing package libnss3-nssdb (--configure):
  package libnss3-nssdb is already installed and configured
ErrorMessage: package libreoffice-style-elementary is already installed and configured
InstallationDate: Installed on 2016-09-03 (264 days ago)
InstallationMedia: Ubuntu-Studio 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package libreoffice-style-elementary 1:5.1.6~rc2-0ubuntu1~xenial2 failed to install/upgrade: package libreoffice-style-elementary is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)