Comment 0 for bug 1687637

When trying to install Kubuntu, checking the "Format" box in the installer for a partition causes this crash:

Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/PartitionModel.py", line 66, in setData
    item.partman_column_format_toggled(value.toBool())
AttributeError: 'int' object has no attribute 'toBool'

Result of lsb_release -rd:

Description: Ubuntu 17.04
Release: 17.04

Result of apt-cache policy ubiquity:

ubiquity:
  Installed: 17.04.9
  Candidate: 17.04.9
  Version table:
 *** 17.04.9 500
        500 http://archive.ubuntu.com/ubuntu zesty/main amd64 Packages
        100 /var/lib/dpkg/status

This bug tracker only allows me to submit one attachment. /var/log/partman is attached. I will try to attach /var/log/syslog in a comment if that is possible.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: ubiquity 17.04.9
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CasperVersion: 1.380
CurrentDesktop: KDE
Date: Tue May 2 14:36:40 2017
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
LiveMediaBuild: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)