first boot after upgrade - package libswscale-extra-2 (not installed) failed to install/upgrade: libswscale-extra-2:all 6:9.18-0ubuntu0.14.04.1 (Multi-Arch: no) n'est pas installable simultanément avec libswscale-extra-2 qui comporte plusieurs instances installées

[kerkael]

can't say much more. After upgrade from 13.10 some error messages about applications that can't be upgraded or that fail.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libswscale-extra-2 (not installed)
ProcVersionSignature: Ubuntu 3.11.0-26.45-generic 3.11.10.12
Uname: Linux 3.11.0-26-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Sat Jul 25 11:33:50 2015
DuplicateSignature: package:libswscale-extra-2:(not installed):libswscale-extra-2:all 6:9.18-0ubuntu0.14.04.1 (Multi-Arch: no) n'est pas installable simultanément avec libswscale-extra-2 qui comporte plusieurs instances installées
ErrorMessage: libswscale-extra-2:all 6:9.18-0ubuntu0.14.04.1 (Multi-Arch: no) n'est pas installable simultanément avec libswscale-extra-2 qui comporte plusieurs instances installées
SourcePackage: libav
Title: package libswscale-extra-2 (not installed) failed to install/upgrade: libswscale-extra-2:all 6:9.18-0ubuntu0.14.04.1 (Multi-Arch: no) n'est pas installable simultanément avec libswscale-extra-2 qui comporte plusieurs instances installées
UpgradeStatus: Upgraded to trusty on 2015-07-25 (0 days ago)