package 389-ds-base 1.3.2.16-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

this problem occurs when trying to install kolab from kolab repositories.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: 389-ds-base 1.3.2.16-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-33.44~14.04.1-generic 3.16.7-ckt7
Uname: Linux 3.16.0-33-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
Date: Sat Mar 28 21:07:14 2015
DuplicateSignature: package:389-ds-base:1.3.2.16-0ubuntu1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2015-03-17 (11 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: 389-ds-base
Title: package 389-ds-base 1.3.2.16-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)