"GLib-CRITICAL **: Source ID ___ was not found"

[Moses Moore]

When viewing a directory, gthumb spews many lines to stderr. When changing to a different folder, it spews more. Every line looks like the following (with a different number in ___ each time):

    (gthumb:18933): GLib-CRITICAL **: Source ID ___ was not found when attempting to remove it

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gthumb 3:3.3.1.is.3.2.7-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3
Architecture: i386
CurrentDesktop: XFCE
Date: Sun Apr 27 01:34:55 2014
InstallationDate: Installed on 2013-06-08 (322 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
SourcePackage: gthumb
UpgradeStatus: Upgraded to trusty on 2014-04-20 (6 days ago)

[reynaerde (reynaerde)]

I have the same problem, but have not experienced any loss of functionality. It only seems to happen when gThumb generates new thumbnails. The same problem is described in bug #1307127 but I am not sure whether the two are related.

[Launchpad Janitor (janitor)]

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

[Moses Moore (moses-mozai)]

Found in bug #1264368 a possible explanation: gthumb may be passing bad/invalid paramters to `g_source_remove()`.

Also relevant:

https://bugzilla.gnome.org/show_bug.cgi?id=721369#c7

> It's not GTK+. GLib recently started throwing a warning when g_source_remove()
> is passed garbage (as per warning). Your applications have probably been broken
> for a while, and there's no telling what could actually have happened in the
> past when g_source_remove() would happily close any random source because the
> programmer got the wrong argument to g_source_remove().

[bb (vancouverbluesea)]

I can observe this specifically when I am connecting to an SMB share using gvfs. Some folders with images work while others do not.