installation failure when installing Ubuntu 11.10 along with Windows 7

[Abishek K]

All packages are downloaded. But when installing, it is just saying crashed.. no more info is available.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.8.7
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
CasperVersion: 1.287
Date: Mon Dec 12 17:49:31 2011
LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcEnviron:
 LANGUAGE=en_IN
 PATH=(custom, no user)
 LANG=en_IN
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Dec 12 17:49:14 ubuntu plugininstall.py: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Dec 12 17:49:14 ubuntu plugininstall.py:

[Brian Murray (brian-murray)]

Dec 12 17:48:42 ubuntu ubiquity: dpkg-deb (subprocess): data: internal gzip read error: '<fd:0>: data error'
Dec 12 17:48:42 ubuntu ubiquity: dpkg-deb: error: subprocess <decompress> returned error exit status 2
Dec 12 17:48:42 ubuntu ubiquity: dpkg: error processing /target/var/cache/apt/archives/libflite1_1.4-release-2_i386.deb (--unpack):
Dec 12 17:48:42 ubuntu ubiquity: subprocess dpkg-deb --fsys-tarfile returned error exit status 2
Dec 12 17:48:42 ubuntu ubiquity: No apport report written because the error message indicates an issue on the local system