I am getting a similar error after upgrading from 14.10 to 15.04. The error reported is as follows (installing 'rhythmbox-plugin-magnatune' does not work -- it won't install): Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 93 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Setting up python3 (3.4.3-1) ... running python rtupdate hooks for python3.4... dpkg-query: package 'rhythmbox-plugin-magnatune' is not installed Use dpkg --info (= dpkg-deb --info) to examine archive files, and dpkg --contents (= dpkg-deb --contents) to list their contents. Traceback (most recent call last): File "/usr/bin/py3clean", line 210, in main() File "/usr/bin/py3clean", line 196, in main pfiles = set(dpf.from_package(options.package)) File "/usr/share/python3/debpython/files.py", line 53, in from_package raise Exception("cannot get content of %s" % package_name) Exception: cannot get content of rhythmbox-plugin-magnatune error running python rtupdate hook rhythmbox-plugin-magnatune dpkg: error processing package python3 (--configure): subprocess installed post-installation script returned error exit status 4 dpkg: dependency problems prevent configuration of python3-apt: python3-apt depends on python3 (<< 3.5); however: Package python3 is not configured yet. python3-apt depends on python3 (>= 3.4~); however: Package python3 is not configured yet. dpkg: error processing package python3-apt (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of language-selector-common: language-selector-common depends on python3; however: Package python3 is not configured yet. language-selector-common depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. language-selector-common depends on python3-apt (>= 0.7.12.0); however: Package python3-apt is not configured yet. dpkg: error processing package language-selector-common (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of ubuntu-drivers-common: ubuntu-drivers-common depends on python3; however: Package python3 is not configured yet. ubuntu-drivers-common depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. ubuntu-drivers-common depends on python3-apt; however: Package python3-apt is not configured yet. dpkg: error processing package ubuntu-drivers-common (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of update-notifier-common: update-notifier-common depends on python3:any; however: Package python3 is not configured yet. update-notifier-common depends on python3-apt; however: Package python3-apt is not configured yet. dpkg: error processing package update-notifier-common (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-distupgrade: python3-distupgrade depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-distupgrade depends on python3-apt (>= 0.8.5~); however: Package python3-apt is not configured yet. dpkg: error processing package python3-distupgrade (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-update-manager: python3-update-manager depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-update-manager depends on python3-apt (>= 0.8.5~); however: Package python3-apt is not configured yet. python3-update-manager depends on python3-distupgrade; however: Package python3-distupgrade is not configured yet. dpkg: error processing package python3-update-manager (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of apturl-common: apturl-common depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. apturl-common depends on python3-apt; however: Package python3-apt is not configured yet. apturl-common depends on python3-update-manager; however: Package python3-update-manager is not configured yet. dpkg: error processing package apturl-common (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of unattended-upgrades: unattended-upgrades depends on python3; however: Package python3 is not configured yet. unattended-upgrades depends on python3-apt; however: Package python3-apt is not configured yet. dpkg: error processing package unattended-upgrades (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-software-properties: python3-software-properties depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-software-properties depends on python3; however: Package python3 is not configured yet. python3-software-properties depends on python3-apt (>= 0.6.20ubuntu16); however: Package python3-apt is not configured yet. python3-software-properties depends on unattended-upgrades; however: Package unattended-upgrades is not configured yet. dpkg: error processing package python3-software-properties (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of software-properties-common: software-properties-common depends on python3; however: Package python3 is not configured yet. software-properties-common depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. software-properties-common depends on python3-software-properties (= 0.96.4); however: Package python3-software-properties is not configured yet. dpkg: error processing package software-properties-common (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-pkg-resources: python3-pkg-resources depends on python3:any (>= 3.4); however: Package python3 is not configured yet. python3-pkg-resources depends on python3:any (<< 3.5); however: Package python3 is not configured yet. dpkg: error processing package python3-pkg-resources (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-aptdaemon: python3-aptdaemon depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-aptdaemon depends on python3-apt (>= 0.8.5~ubuntu1); however: Package python3-apt is not configured yet. python3-aptdaemon depends on python3-pkg-resources; however: Package python3-pkg-resources is not configured yet. dpkg: error processing package python3-aptdaemon (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-aptdaemon.gtk3widgets: python3-aptdaemon.gtk3widgets depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-aptdaemon.gtk3widgets depends on python3-aptdaemon (= 1.1.1+bzr982-0ubuntu3); however: Package python3-aptdaemon is not configured yet. dpkg: error processing package python3-aptdaemon.gtk3widgets (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of software-properties-gtk: software-properties-gtk depends on python3; however: Package python3 is not configured yet. software-properties-gtk depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. software-properties-gtk depends on python3-software-properties (= 0.96.4); however: Package python3-software-properties is not configured yet. software-properties-gtk depends on python3-aptdaemon.gtk3widgets; however: Package python3-aptdaemon.gtk3widgets is not configured yet. software-properties-gtk depends on software-properties-common; however: Package software-properties-common is not configured yet. software-properties-gtk depends on ubuntu-drivers-common (>= 1:0.2.75); however: Package ubuntu-drivers-common is not configured yet. dpkg: error processing package software-properties-gtk (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of apturl: apturl depends on python3; however: Package python3 is not configured yet. apturl depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. apturl depends on apturl-common (= 0.5.2ubuntu6); however: Package apturl-common is not configured yet. apturl depends on software-properties-gtk; however: Package software-properties-gtk is not configured yet. apturl depends on python3-aptdaemon; however: Package python3-aptdaemon is not configured yet. apturl depends on python3-aptdaemon.gtk3widgets; however: Package python3-aptdaemon.gtk3widgets is not configured yet. dpkg: error processing package apturl (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-gdbm:amd64: python3-gdbm:amd64 depends on python3 (>= 3.4); however: Package python3 is not configured yet. python3-gdbm:amd64 depends on python3 (<< 3.5); however: Package python3 is not configured yet. dpkg: error processing package python3-gdbm:amd64 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-commandnotfound: python3-commandnotfound depends on python3-apt; however: Package python3-apt is not configured yet. python3-commandnotfound depends on python3-gdbm; however: Package python3-gdbm:amd64 is not configured yet. python3-commandnotfound depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package python3-commandnotfound (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of command-not-found: command-not-found depends on python3-commandnotfound (>= 0.3ubuntu7); however: Package python3-commandnotfound is not configured yet. dpkg: error processing package command-not-found (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of flashplugin-installer: flashplugin-installer depends on update-notifier-common (>= 0.119ubuntu2); however: Package update-notifier-common is not configured yet. dpkg: error processing package flashplugin-installer (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of foomatic-db-compressed-ppds: foomatic-db-compressed-ppds depends on python3; however: Package python3 is not configured yet. dpkg: error processing package foomatic-db-compressed-ppds (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gedit: gedit depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package gedit (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gir1.2-ibus-1.0:amd64: gir1.2-ibus-1.0:amd64 depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package gir1.2-ibus-1.0:amd64 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gnome-menus: gnome-menus depends on python3; however: Package python3 is not configured yet. gnome-menus depends on python3:any (>= 3.1~); however: Package python3 is not configured yet. dpkg: error processing package gnome-menus (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-brlapi: python3-brlapi depends on python3 (<< 3.5); however: Package python3 is not configured yet. python3-brlapi depends on python3 (>= 3.4~); however: Package python3 is not configured yet. dpkg: error processing package python3-brlapi (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-cairo: python3-cairo depends on python3 (<< 3.5); however: Package python3 is not configured yet. python3-cairo depends on python3 (>= 3.4~); however: Package python3 is not configured yet. dpkg: error processing package python3-cairo (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-pyatspi: python3-pyatspi depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package python3-pyatspi (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-speechd: python3-speechd depends on python3; however: Package python3 is not configured yet. python3-speechd depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package python3-speechd (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gnome-orca: gnome-orca depends on python3; however: Package python3 is not configured yet. gnome-orca depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. gnome-orca depends on python3-brlapi (>= 0.5.1); however: Package python3-brlapi is not configured yet. gnome-orca depends on python3-cairo; however: Package python3-cairo is not configured yet. gnome-orca depends on python3-pyatspi (>= 2.10); however: Package python3-pyatspi is not configured yet. gnome-orca depends on python3-speechd (>= 0.8); however: Package python3-speechd is not configured yet. dpkg: error processing package gnome-orca (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gnome-terminal: gnome-terminal depends on python3; however: Package python3 is not configured yet. dpkg: error processing package gnome-terminal (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-aptdaemon.pkcompat: python3-aptdaemon.pkcompat depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. python3-aptdaemon.pkcompat depends on python3-aptdaemon (= 1.1.1+bzr982-0ubuntu3); however: Package python3-aptdaemon is not configured yet. dpkg: error processing package python3-aptdaemon.pkcompat (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of gstreamer1.0-packagekit: gstreamer1.0-packagekit depends on python3-aptdaemon.pkcompat | packagekit-system-interface | packagekit (= 0.8.17-4ubuntu4); however: Package python3-aptdaemon.pkcompat is not configured yet. Package packagekit-system-interface is not installed. Package python3-aptdaemon.pkcompat which provides packagekit-system-interface is not configured yet. Package packagekit is not installed. dpkg: error processing package gstreamer1.0-packagekit (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of hplip-data: hplip-data depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package hplip-data (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-pil:amd64: python3-pil:amd64 depends on python3 (<< 3.5); however: Package python3 is not configured yet. python3-pil:amd64 depends on python3 (>= 3.4~); however: Package python3 is not configured yet. dpkg: error processing package python3-pil:amd64 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-pexpect: python3-pexpect depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package python3-pexpect (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-reportlab-accel:amd64: python3-reportlab-accel:amd64 depends on python3 (<< 3.5); however: Package python3 is not configured yet. python3-reportlab-accel:amd64 depends on python3 (>= 3.4~); however: Package python3 is not configured yet. dpkg: error processing package python3-reportlab-accel:amd64 (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of python3-reportlab: python3-reportlab depends on python3-reportlab-accel (>= 3.1.44-1); however: Package python3-reportlab-accel:amd64 is not configured yet. python3-reportlab depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package python3-reportlab (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of hplip: hplip depends on hplip-data (= 3.15.2-0ubuntu4); however: Package hplip-data is not configured yet. hplip depends on python3 (<< 3.5); however: Package python3 is not configured yet. hplip depends on python3 (>= 3.4~); however: Package python3 is not configured yet. hplip depends on python3-pil; however: Package python3-pil:amd64 is not configured yet. hplip depends on python3-pexpect; however: Package python3-pexpect is not configured yet. hplip depends on python3-reportlab; however: Package python3-reportlab is not configured yet. dpkg: error processing package hplip (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of printer-driver-postscript-hp: printer-driver-postscript-hp depends on python3; however: Package python3 is not configured yet. printer-driver-postscript-hp depends on hplip (>= 3.15.2-0ubuntu4); however: Package hplip is not configured yet. dpkg: error processing package printer-driver-postscript-hp (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of ibus: ibus depends on gir1.2-ibus-1.0 (= 1.5.9-1ubuntu3); however: Package gir1.2-ibus-1.0:amd64 is not configured yet. ibus depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package ibus (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of ibus-table: ibus-table depends on ibus (>= 1.5.0); however: Package ibus is not configured yet. ibus-table depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. dpkg: error processing package ibus-table (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of kde-runtime: kde-runtime depends on language-selector-common; however: Package language-selector-common is not configured yet. dpkg: error processing package kde-runtime (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of k4dirstat: k4dirstat depends on kde-runtime; however: Package kde-runtime is not configured yet. dpkg: error processing package k4dirstat (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of kdepim-runtime: kdepim-runtime depends on kde-runtime; however: Package kde-runtime is not configured yet. dpkg: error processing package kdepim-runtime (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of aptdaemon: aptdaemon depends on python3; however: Package python3 is not configured yet. aptdaemon depends on python3:any (>= 3.2~); however: Package python3 is not configured yet. aptdaemon depends on python3-aptdaemon (= 1.1.1+bzr982-0ubuntu3); however: Package python3-aptdaemon is not configured yet. dpkg: error processing package aptdaemon (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of language-selector-gnome: language-selector-gnome depends on language-selector-common (= 0.143); however: Package language-selector-common is not configured yet. language-selector-gnome depends on python3; however: Package python3 is not configured yet. language-selector-gnome depends on python3:any (>= 3.3.2-2~); however: Package python3 is not configured yet. language-selector-gnome depends on python3-apt; however: Package python3-apt is not configured yet. language-selector-gnome depends on aptdaemon (>= 0.40+bzr527); however: Package aptdaemon is not configured yet. language-selector-gnome depends on python3-aptdaemon.gtk3widgets; however: Package python3-aptdaemon.gtk3widgets is not configured yet. dpkg: error processing package language-selector-gnome (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of okular: okular depends on kde-runtime; however: Package kde-runtime is not configured yet. dpkg: error processing package okular (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of onboard: onboard depends on python3 (<< 3.5); however: Package python3 is not configured yet. onboard depends on python3 (>= 3.4~); however: Package python3 is not configured yet. onboard depends on python3-cairo; however: Package python3-cairo is not configured yet. dpkg: error processing package onboard (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of onboard-data: onboard-data depends on onboard (>= 0.99.0~alpha1~tr1507); however: Package onboard is not configured yet. dpkg: error processing package onboard-data (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of openprinting-ppds: openprinting-ppds depends on python3; however: Package python3 is not configured yet. dpkg: error processing package openprinting-ppds (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of printer-driver-foo2zjs-common: printer-driver-foo2zjs-common depends on python3; however: Package python3 is not configured yet. dpkg: error processing package printer-driver-foo2zjs-common (--configure): dependency problems - leaving unconfigured dpkg: too many errors, stopping Errors were encountered while processing: python3 python3-apt language-selector-common ubuntu-drivers-common update-notifier-common python3-distupgrade python3-update-manager apturl-common unattended-upgrades python3-software-properties software-properties-common python3-pkg-resources python3-aptdaemon python3-aptdaemon.gtk3widgets software-properties-gtk apturl python3-gdbm:amd64 python3-commandnotfound command-not-found flashplugin-installer foomatic-db-compressed-ppds gedit gir1.2-ibus-1.0:amd64 gnome-menus python3-brlapi python3-cairo python3-pyatspi python3-speechd gnome-orca gnome-terminal python3-aptdaemon.pkcompat gstreamer1.0-packagekit hplip-data python3-pil:amd64 python3-pexpect python3-reportlab-accel:amd64 python3-reportlab hplip printer-driver-postscript-hp ibus ibus-table kde-runtime k4dirstat kdepim-runtime aptdaemon language-selector-gnome okular onboard onboard-data openprinting-ppds printer-driver-foo2zjs-common Processing was halted because there were too many errors.