VirtualBox crashed with SIGSEGV in QWindow::parent()

[espaciosalter20]

Description: Ubuntu Yakkety Yak (development branch)
Release: 16.10
virtualbox:
  Instalados: 5.1.6-dfsg-2
  Candidato: 5.1.6-dfsg-2
  Tabla de versión:
 *** 5.1.6-dfsg-2 500

it was starting Ubuntu when a windows popup showing an error about Virtualbox

ProblemType: Crash
DistroRelease: Ubuntu 16.10
Package: virtualbox-qt 5.1.6-dfsg-1
ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16
Uname: Linux 4.4.0-9136-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Sep 15 00:07:51 2016
ExecutablePath: /usr/lib/virtualbox/VirtualBox
InstallationDate: Installed on 2016-09-15 (0 days ago)
InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Alpha amd64 (20160824)
ProcCmdline: /usr/lib/virtualbox/VirtualBox --comment Windows\ 7 --startvm 8b9e2839-1c2a-45b6-8a4e-61f7ac37f51b --no-startvm-errormsgbox
ProcEnviron:
 LANGUAGE=es_CO:es
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_CO.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: virtualbox
StacktraceTop:
 QWindow::parent() const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QPlatformWindow::parent() const () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QXcbWindow::hide() () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
 QWindow::setVisible(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QWidgetPrivate::hide_sys() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
Title: VirtualBox crashed with SIGSEGV in QWindow::parent()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 QWindow::parent() const () from /tmp/apport_sandbox_mCtHod/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QPlatformWindow::parent() const () from /tmp/apport_sandbox_mCtHod/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QXcbWindow::hide() () from /tmp/apport_sandbox_mCtHod/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
 QWindow::setVisible(bool) () from /tmp/apport_sandbox_mCtHod/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
 QWidgetPrivate::hide_sys() () from /tmp/apport_sandbox_mCtHod/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5

[Launchpad Janitor (janitor)]

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

[Gianfranco Costamagna (costamagnagianfranco)]

Can you please try my ppa?
https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/virtualbox-ppa

[Gianfranco Costamagna (costamagnagianfranco)]

please explain the rationale before changing bug status

[Launchpad Janitor (janitor)]

[Expired for virtualbox (Ubuntu) because there has been no activity for 60 days.]