Kubuntu 14.04 displays a strange error during instalation and installer freezes

[Paweł Ciechomski]

I'm trying to install Kubuntu 14.04 for a week from daily builds (every day I download newer build). During the installation, when I want to go to fourth step of installation (to disk setup) I'm getting strange error (shown in the screenshot) and I can not continue, because the installer does not respond. I tried to unmark the options visible in the screenshot, but it doesn't work. Installation with disconnected Internet gets the same problem.
My computer is MSI GE70 2OD-240XPL. I must add that Ubuntu works perfectly on this computer.

Screenshot: http://imgur.com/GM08CwO

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity-frontend-kde 2.18.4 [modified: usr/share/applications/kde4/ubiquity-kdeui.desktop]
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.340
CurrentDesktop: KDE
Date: Mon Apr 14 19:35:26 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash --
LiveMediaBuild: Kubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140414)
PackageArchitecture: all
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)