package roundcube-core 0.9.5+dfsg1-4.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

[karanga]

Attempting to install roundcube via Ubuntu Software Centre stalls around 40% of the way through the installation.

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: roundcube-core 0.9.5+dfsg1-4.2
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
Date: Wed Apr 22 00:03:25 2015
DuplicateSignature: package:roundcube-core:0.9.5+dfsg1-4.2:subprocess installed post-installation script returned error exit status 128
ErrorMessage: subprocess installed post-installation script returned error exit status 128
InstallationDate: Installed on 2015-04-21 (0 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: roundcube
Title: package roundcube-core 0.9.5+dfsg1-4.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128
UpgradeStatus: Upgraded to vivid on 2015-04-21 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.