package firebird2.5-super 2.5.2.26540.ds4-10ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 15

installing firebird2.5 on lubuntu 14.10 64bit

ProblemType: Package
DistroRelease: Ubuntu 14.10
Package: firebird2.5-super 2.5.2.26540.ds4-10ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
Date: Sun Jan 4 18:25:14 2015
DpkgHistoryLog:
 Start-Date: 2015-01-04 18:25:01
 Commandline: apt-get install firebird2.5-super
 Install: firebird2.5-server-common:amd64 (2.5.2.26540.ds4-10ubuntu1, automatic), libfbclient2:amd64 (2.5.2.26540.ds4-10ubuntu1, automatic), firebird2.5-common-doc:amd64 (2.5.2.26540.ds4-10ubuntu1, automatic), firebird2.5-super:amd64 (2.5.2.26540.ds4-10ubuntu1), firebird2.5-common:amd64 (2.5.2.26540.ds4-10ubuntu1, automatic), libib-util:amd64 (2.5.2.26540.ds4-10ubuntu1, automatic)
DuplicateSignature: package:firebird2.5-super:2.5.2.26540.ds4-10ubuntu1:subprocess installed post-installation script returned error exit status 15
ErrorMessage: subprocess installed post-installation script returned error exit status 15
InstallationDate: Installed on 2014-12-23 (11 days ago)
InstallationMedia: Lubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: firebird2.5
Title: package firebird2.5-super 2.5.2.26540.ds4-10ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 15
UpgradeStatus: No upgrade log present (probably fresh install)