No puedo instalar Lubuntu 14.04 LTS, el instalador falla

[Rafael Angel Márquez Villalobos]

cuando esta instalando el sistema operativo, de pronto dice que el instalador falla por un error.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.7
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
ApportVersion: 2.14.1-0ubuntu3
Architecture: i386
CasperVersion: 1.340
Date: Wed Feb 18 12:09:53 2015
InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash -- debian-installer/language=es keyboard-configuration/layoutcode?=es
LiveMediaBuild: Lubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
ProcEnviron:
 LANGUAGE=es_VE.UTF-8
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_VE.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Feb 18 15:34:11 lubuntu /plugininstall.py: Traceback (most recent call last):
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1770, in <module>
Feb 18 15:34:11 lubuntu /plugininstall.py: install.run()
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 78, in wrapper
Feb 18 15:34:11 lubuntu /plugininstall.py: func(self)
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 252, in run
Feb 18 15:34:11 lubuntu /plugininstall.py: self.remove_extras()
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1455, in remove_extras
Feb 18 15:34:11 lubuntu /plugininstall.py: cache = Cache()
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/lib/python3/dist-packages/apt/cache.py", line 107, in __init__
Feb 18 15:34:11 lubuntu /plugininstall.py: self.open(progress)
Feb 18 15:34:11 lubuntu /plugininstall.py: File "/usr/lib/python3/dist-packages/apt/cache.py", line 151, in open
Feb 18 15:34:11 lubuntu /plugininstall.py: self._cache = apt_pkg.Cache(progress)
Feb 18 15:34:11 lubuntu /plugininstall.py: SystemError: E:Encountered a section with no Package: header, E:Problem with MergeList /target/var/lib/apt/lists/ve.archive.ubuntu.com_ubuntu_dists_trusty_main_i18n_Translation-en, E:No se pudieron analizar o abrir las listas de paquetes o el archivo de estado.
Feb 18 15:34:11 lubuntu /plugininstall.py: