After system updates applications installed via snap failed to start

[Cliff Carson]

After installing updates (sudo update and upgrade) on or about 3/18/18 applications installed using snap fail to start. Specifically chromium, gimp, and vlc. No really good indications what is going wrong for chromium but starting gimp from the command line results in

ln: failed to create symbolic link '/home/cliff/snap/gimp/30/.config/gtk-2.0/gtkfilechooser.ini': File exists
Gtk-Message: Failed to load module "gail"
Gtk-Message: Failed to load module "atk-bridge"
Cannot open display:

Have two system at 18.04 and both cannot open an application that was install with snap.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: snap (not installed)
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 21 17:47:12 2018
InstallationDate: Installed on 2018-03-05 (15 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180305)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: snap
UpgradeStatus: No upgrade log present (probably fresh install)

[Cliff Carson (ccarson1)]

Correction - the second system is not failing. All snap installed application are running OK. Could be the mix of application installed on this system. List of snaps installed;

chromium 64.0.3282.167 237 stable canonical -
clementine 1.3.1.29+git 54 stable kz6fittycent -
core 16-2.31.2 4206 stable canonical core
gimp 2.8.22 30 stable snapcrafters -
gnome-3-26-1604 3.26.0 53 stable canonical -
gnome-calculator 3.26.0 154 stable canonical -
gnome-characters 3.26.2 69 stable canonical -
gnome-logs 3.26.2 25 stable canonical -
gnome-system-monitor 3.26.0 36 stable canonical -
notepadqq 1.2.0-2 115 stable danieleds -
vlc 3.0.1-4-g14a4897 190 stable videolan -

[Cliff Carson (ccarson1)]

Thought both my laptop and desktop were failing to start snap installed applications but recheck the desktop yesterday and found snap installed application were OK. After starting the laptop and running update/upgrade (do that every morning) the snap applications are starting again. Please close this bug out.

[John Lenton (chipaca)]

Setting to Invalid to "close this bug out" as requested, although it would've been nice to figure out what was going on.