Kubuntu 15.10 daily (12 +13 sept) unable to install

[yossarian_uk]

I tried to install the daily kubuntu wily iso yesterday (12 sept 2015) and today (13th)

I have not been able to install, ubiquity crashes on start up with following error

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Traceback (most recent call last):
  File "/usr/lib/ubiquity/bin/ubiquity", line 649, in <module>
    main(oem_config)
  File "/usr/lib/ubiquity/bin/ubiquity", line 633, in main
    install(args[0], query=options.query)
  File "/usr/lib/ubiquity/bin/ubiquity", line 264, in install
    wizard = ui.Wizard(distro)
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_ui.py", line 212, in __init__
    mod.ui = mod.ui_class(mod.controller)
  File "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 221, in __init__
    self._setup_page()
  File "/usr/lib/ubiquity/plugins/ubi-wireless.py", line 227, in _setup_page
    self.nmwidget = nmwidgets.NetworkManagerWidget()
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", line 364, in __init__
    self.view = NetworkManagerTreeView(self._on_state_changed)
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/nmwidgets.py", line 228, in __init__
    self.wifi_model = NetworkManager(model, QtQueuedCaller, state_changed)
  File "/usr/lib/ubiquity/ubiquity/nm.py", line 119, in __init__
    self.start(state_changed)
  File "/usr/lib/ubiquity/ubiquity/nm.py", line 137, in start
    self.build_cache()
  File "/usr/lib/ubiquity/ubiquity/nm.py", line 225, in build_cache
    devices = self.manager.GetDevices()
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Rejected send message, 7 matched rules; type="method_call", sender=":1.58" (uid=999 pid=2395 comm="/usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity kd") interface="(unset)" member="GetDevices" error name="(unset)" requested_reply="0" destination=":1.8" (uid=0 pid=1330 comm="/usr/sbin/NetworkManager --no-daemon ")

-----------------------------------------------------------------------------
After it crashes it loads a plasma session, but if you try to install from the desktop it also gives the same error.

A fews week ago I was able to install wily daily iso.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubiquity 2.21.29
ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
Uname: Linux 4.2.0-7-generic x86_64
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
CasperVersion: 1.364
CurrentDesktop: KDE
Date: Sun Sep 13 08:59:40 2015
LiveMediaBuild: Kubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150913)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Jason Gerard DeRose (jderose)]

Same crash is likewise happening with the last few days of Ubuntu daily ISOs.