Installer fails to start in saucy live USB system

[Otus]

I booted a daily live image using an USB stick. After selecting try ubuntu (and waiting ages) I got to the desktop and tested some programs. Double clicking the install icon on the desktop failed to open the installer. The launcher option also failed to work.

I checked top and ps, it seems ubiquity was running. I killed it and tried launching from the command line. It ran, but gave me no window. Ctrl+C didn't even interrupt it.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubiquity 2.15.16
ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
Uname: Linux 3.11.0-4-generic x86_64
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.336
Date: Tue Sep 10 19:08:56 2013
InstallCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- keyboard-configuration/layoutcode=fi
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130907)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)