Install Ubuntu 12.10 crashes on install language packages

[Ricardo Maltez]

In live usb ubuntu 12.10 when I start to install ubuntu in my disk,
app crashes when installing language packages (Portuguese Packages)

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.11.8
ProcVersionSignature: Ubuntu 3.5.0-3.3-generic 3.5.0-rc5
Uname: Linux 3.5.0-3-generic x86_64
ApportVersion: 2.2.5-0ubuntu2
Architecture: amd64
CasperVersion: 1.319
Date: Fri Jul 6 13:38:12 2012
InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper persistent initrd=/casper/initrd.lz splash -- BOOT_IMAGE=/casper/vmlinuz
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120705)
ProcEnviron:
 LANGUAGE=pt_PT.UTF-8
 TERM=unknown
 PATH=(custom, no user)
 LANG=pt_PT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)