package openjdk-7-jre-headless 7u91-2.6.3-0ubuntu0.14.04.1 failed to install/upgrade: trying to overwrite shared '/etc/java-7-openjdk/content-types.properties', which is different from other instances of package openjdk-7-jre-headless:amd64

[g.muzzillo]

this happens when installing both AMD64 and I386 packages

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: openjdk-7-jre-headless 7u91-2.6.3-0ubuntu0.14.04.1
ProcVersionSignature: Ubuntu 3.19.0-47.53~14.04.1-generic 3.19.8-ckt10
Uname: Linux 3.19.0-47-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Mon Jan 25 17:12:45 2016
DuplicateSignature: package:openjdk-7-jre-headless:7u91-2.6.3-0ubuntu0.14.04.1:trying to overwrite shared '/etc/java-7-openjdk/content-types.properties', which is different from other instances of package openjdk-7-jre-headless:amd64
ErrorMessage: trying to overwrite shared '/etc/java-7-openjdk/content-types.properties', which is different from other instances of package openjdk-7-jre-headless:amd64
InstallationDate: Installed on 2016-01-25 (0 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.10
SourcePackage: openjdk-7
Title: package openjdk-7-jre-headless 7u91-2.6.3-0ubuntu0.14.04.1 failed to install/upgrade: trying to overwrite shared '/etc/java-7-openjdk/content-types.properties', which is different from other instances of package openjdk-7-jre-headless:amd64
UpgradeStatus: No upgrade log present (probably fresh install)