package request-tracker4 4.0.4-2ubuntu0.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

[Bahri]

system report

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: request-tracker4 4.0.4-2ubuntu0.1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic-pae 3.2.18
Uname: Linux 3.2.0-25-generic-pae i686
ApportVersion: 2.0.1-0ubuntu8
AptOrdering:
 boa-constructor: Install
 request-tracker4: Configure
 boa-constructor: Configure
Architecture: i386
Date: Fri Jun 22 15:08:00 2012
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
PackageArchitecture: all
SourcePackage: request-tracker4
Title: package request-tracker4 4.0.4-2ubuntu0.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)

[Bahri (bahri-star)]

please let me know if you have a solution for it! Thanks