kubuntu-desktop can't be installed during 15.10 upgrade launched from muon Discover on KDE

[volamoot]

Description: Ubuntu 15.04
Release: 15.04
---------------------------------------------------

Initiated kubuntu 15.10 upgrade via Muon Discover and it loaded a box that said "Error - Can't Install kubuntu-desktop"

Unable to upgrade Safely from 15.04.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubuntu-release-upgrader-core 1:15.04.14.2
ProcVersionSignature: Ubuntu 3.19.0-31.36-generic 3.19.8-ckt7
Uname: Linux 3.19.0-31-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Sat Oct 24 22:40:46 2015
InstallationDate: Installed on 2015-09-28 (26 days ago)
InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to vivid on 2015-10-25 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

From VarLogDistupgradeMainlog.txt:

2015-10-24 22:33:15,074 DEBUG none of the '['ubuntu-desktop', 'kubuntu-desktop', 'xubuntu-core', 'xubuntu-desktop', 'ubuntustudio-desktop', 'mythbuntu-desktop', 'kubuntu-netbook', 'lubuntu-core', 'lubuntu-desktop', 'ubuntu-gnome-desktop', 'ubuntu-mate-core', 'ubuntu-mate-cloudtop', 'ubuntu-mate-desktop']' meta-pkgs installed
2015-10-24 22:33:15,074 DEBUG guessing 'kubuntu-desktop' as missing meta-pkg
2015-10-24 22:33:15,873 ERROR failed to mark 'kubuntu-desktop' for install (E:Unable to correct problems, you have held broken packages.)

Please try installing kubuntu-desktop while on 15.04 and then upgrading to 15.10. Thanks!

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]