installer crasher on clicking continue

[TheRedFox]

this happens at the "Preparing to install Kubuntu" page (16.04, daily build)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.42
ProcVersionSignature: Ubuntu 4.3.0-5.16-generic 4.3.3
Uname: Linux 4.3.0-5-generic x86_64
ApportVersion: 2.19.3-0ubuntu2
Architecture: amd64
CasperVersion: 1.366
CurrentDesktop: KDE
Date: Sat Jan 9 08:53:05 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160109)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Flames_in_Paradise (ellisistfroh-deactivatedaccount)]

just extracting the last few lines from UbiquitySyslog.txt (appended wt bug-report)

Jan 9 08:52:28 kubuntu ubiquity[6195]: secureboot_key = self.ui.get_secureboot_key()
Jan 9 08:52:28 kubuntu ubiquity[6195]: AttributeError: 'PageKde' object has no attribute 'get_secureboot_key'

Thus marking it as duplicate since it has been reported already, Thanks for sending.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.