FretsOnFire.py crashed with ImportError in /usr/share/games/fretsonfire/game/Texture.py: No module named PngImagePlugin

[sengottuvel]

it just not running....

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: fretsonfire-game 1.3.110.dfsg-3
ProcVersionSignature: Ubuntu 3.8.0-6.13-generic 3.8.0-rc7
Uname: Linux 3.8.0-6-generic i686
NonfreeKernelModules: wl
ApportVersion: 2.8-0ubuntu4
Architecture: i386
CrashCounter: 1
Date: Fri Feb 15 17:14:44 2013
EcryptfsInUse: Yes
ExecutablePath: /usr/share/games/fretsonfire/game/FretsOnFire.py
InstallationDate: Installed on 2013-02-02 (12 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130201)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
ProcCmdline: /usr/bin/python ./FretsOnFire.py
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
PythonArgs: ['./FretsOnFire.py']
SourcePackage: fretsonfire
Title: FretsOnFire.py crashed with ImportError in /usr/share/games/fretsonfire/game/Texture.py: No module named PngImagePlugin
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom debian-tor dip lpadmin plugdev sambashare sudo