package freeradius-mysql 2.1.10+dfsg-3ubuntu0.12.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

I had installed freeradius and very next day uninstalled it and then again when i installed. then the freeradius server was not starting. dont know what is the problem

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: freeradius-mysql 2.1.10+dfsg-3ubuntu0.12.04.2
ProcVersionSignature: Ubuntu 3.5.0-52.78~precise1-generic 3.5.7.33
Uname: Linux 3.5.0-52-generic i686
ApportVersion: 2.0.1-0ubuntu17.6
AptOrdering:
 freeradius-mysql: Install
 freeradius-mysql: Configure
Architecture: i386
Date: Sat Jun 28 18:14:24 2014
DuplicateSignature: package:freeradius-mysql:2.1.10+dfsg-3ubuntu0.12.04.2:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130214)
MarkForUpload: True
SourcePackage: freeradius
Title: package freeradius-mysql 2.1.10+dfsg-3ubuntu0.12.04.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)