Need help with 'Two different plugins tried to register *' warnings with gio modules

[Akash Rawal <argmlac gmail com>]

Hello everyone,

    I am developer of pup-volume-monitor, a lightweight volume monitor 
plugin for GIO.

    I need help regarding this problem. Whenever a GIO application is 
started it outputs
warnings like 'Two different plugins tried to register *' and then 
eventually crashes.
 All reported classes belong to my pup-volume-monitor.

    Here's a sample output:


        # desktop_drive_icons
        ** Message: Config file not found

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupClientMonitor'.

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupClientDevice'.

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupVolumeMonitor'.

        (desktop_drive_icons:17909): GLib-GIO-WARNING **: Tried to 
register an extension of the type (null) to extension point 
gio-volume-monitor. Expected type is GVolumeMonitor.

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupClientVolume'.

        (desktop_drive_icons:17909): GLib-GObject-CRITICAL **: 
g_type_add_interface_dynamic: assertion `G_TYPE_IS_INSTANTIATABLE 
(instance_type)' failed

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupMount'.

        (desktop_drive_icons:17909): GLib-GObject-CRITICAL **: 
g_type_add_interface_dynamic: assertion `G_TYPE_IS_INSTANTIATABLE 
(instance_type)' failed

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: Two 
different plugins tried to register 'PupClientDrive'.

        (desktop_drive_icons:17909): GLib-GObject-CRITICAL **: 
g_type_add_interface_dynamic: assertion `G_TYPE_IS_INSTANTIATABLE 
(instance_type)' failed

        (desktop_drive_icons:17909): GLib-GObject-CRITICAL **: 
g_object_new: assertion `G_TYPE_IS_OBJECT (object_type)' failed

        (desktop_drive_icons:17909): GLib-GObject-WARNING **: invalid 
(NULL) pointer instance

        (desktop_drive_icons:17909): GLib-GObject-CRITICAL **: 
g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
        Segmentation fault
        #

    It appears that GIO is probably loading same module twice, not sure 
how.

    I can't reproduce the problem on my system though. The original 
report is here: 
<http://www.murga-linux.com/puppy/viewtopic.php?p=657853&sid=319dbadddc53221373ec75a11e09af78#657853>

    The poster encountered the problem in Precise Puppy Linux 5.3.95 
with glib version 2.32.3.

    I am completely clueless where problem could be. Any ideas?

    Thanks in advance.

- Akash Rawal