GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed

[grofaty]

Hi,
on my 64-bit PC running Ubuntu 14.04 as virtual host and VirtualBox 4.3.36 as virtual environment I have installed Ubuntu 16.04 LTS 64-bit Desktop.

I did the following:
1. Fresh install of Ubuntu 16.04 (few weeks ago).
2. Install/uninstall some programs.
3. Updated packages: sudo apt update && sudo apt full-upgrade -y
4. Then install snappy: sudo apt install snappy
5. So far no problem. Now I did the: snappy info
and got the following error:
==========================================
Adding file: info

(snappy:6617): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT (object)' failed
Loading: file:///home/igor/info
Loading ui!

(snappy:6617): Clutter-CRITICAL **: The Clutter backend is not a X11 backend
**
Clutter:ERROR:x11/clutter-stage-x11.c:1290:clutter_x11_get_stage_window: assertion failed: (CLUTTER_IS_STAGE_X11 (impl))
Aborted (core dumped)
igor@testpc:~$ ubuntu-bug snappy
/usr/share/apport/apport-gtk:16: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import GLib, Wnck, GdkX11, Gdk
==========================================

It looks like something is wrong.
Thanks

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: snappy 0.3.7-1.1
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jun 14 13:37:09 2016
InstallationDate: Installed on 2016-04-22 (53 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: snappy-player
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Reverend Homer (mk-43-ecko)]

affects me too. here is some bt from dumped core