GLib-GObject Warnings and Fatal LIBDBUSMENU-GLIB errors when starting Plank from the CLI

When starting Plank from the CLI I get the following error messages:

$ plank
[INFO 17:21:24.606825] [AbstractMain:179] Plank version: 0.2.0.785
[INFO 17:21:24.606919] [AbstractMain:180] Kernel version: 3.8.2-030802-generic
[INFO 17:21:24.606968] [AbstractMain:181] GLib version: 2.32.3
[INFO 17:21:24.607011] [AbstractMain:182] GTK version: 3.4.2
[INFO 17:21:24.607057] [AbstractMain:183] Wnck version: 3.4.2
[INFO 17:21:24.607107] [AbstractMain:184] Cairo version: 1.10.2
[INFO 17:21:24.607158] [AbstractMain:185] Pango version: 1.30.0
[WARN 17:21:24.648648] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:21:24.649909] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:21:24.651512] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:21:24.652743] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:21:24.799396] [Preferences:189] '/usr/share/plank/themes/Default/hover.theme' is read-only!
[WARN 17:21:24.825073] [Preferences:189] '/usr/share/plank/themes/Default/dock.theme' is read-only!
[WARN 17:21:24.954072] [LIBDBUSMENU-GLIB] Unable to get session bus: Operation was cancelled
[WARN 17:21:24.966477] [GLib-GObject] value "76428" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966578] [GLib-GObject] value "76424" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966637] [GLib-GObject] value "76414" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966692] [GLib-GObject] value "76422" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966747] [GLib-GObject] value "76434" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966801] [GLib-GObject] value "76432" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966854] [GLib-GObject] value "76416" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966908] [GLib-GObject] value "76436" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.966962] [GLib-GObject] value "76418" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967017] [GLib-GObject] value "76426" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967073] [GLib-GObject] value "76430" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967128] [GLib-GObject] value "76440" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967181] [GLib-GObject] value "76438" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967235] [GLib-GObject] value "76442" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967293] [GLib-GObject] value "76420" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967349] [GLib-GObject] value "46025" of type `gint' is invalid or out of range for property `id' of type `gint'
[WARN 17:21:24.967406] [GLib-GObject] value "46026" of type `gint' is invalid or out of range for property `id' of type `gint'
[FATAL 17:21:24.981738] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:24.981799] Plank will not function properly.
[FATAL 17:21:24.997246] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:24.997366] Plank will not function properly.
[FATAL 17:21:25.013145] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.013208] Plank will not function properly.
[FATAL 17:21:25.028466] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.028588] Plank will not function properly.
[FATAL 17:21:25.043954] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.044016] Plank will not function properly.
[FATAL 17:21:25.059368] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.059486] Plank will not function properly.
[FATAL 17:21:25.074920] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.074983] Plank will not function properly.
[FATAL 17:21:25.090439] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.090554] Plank will not function properly.
[FATAL 17:21:25.105955] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.106013] Plank will not function properly.
[FATAL 17:21:25.121393] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.121560] Plank will not function properly.
[FATAL 17:21:25.136892] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.136946] Plank will not function properly.
[FATAL 17:21:25.152366] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.152486] Plank will not function properly.
[FATAL 17:21:25.168062] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.168126] Plank will not function properly.
[FATAL 17:21:25.183625] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.183744] Plank will not function properly.
[FATAL 17:21:25.199016] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.199148] Plank will not function properly.
[FATAL 17:21:25.214892] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.215009] Plank will not function properly.
[FATAL 17:21:25.230511] [LIBDBUSMENU-GLIB] parse_layout_xml: assertion `id == dbusmenu_menuitem_get_id(item)' failed
[FATAL 17:21:25.230618] Plank will not function properly.
[WARN 17:23:23.934511] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:23:42.935415] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:23:44.174235] Failed to fetch xids: No such interface `org.ayatana.bamf.application' on object at path /org/ayatana/bamf/application346989276
[WARN 17:23:44.174524] [WindowControl:104] plank_services_windows_window_control_get_num_windows: runtime check failed: (_tmp2_ != NULL)
[WARN 17:23:46.518647] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:23:51.647947] Failed to fetch xids: No such interface `org.ayatana.bamf.application' on object at path /org/ayatana/bamf/application346989276
[WARN 17:23:51.648241] [WindowControl:104] plank_services_windows_window_control_get_num_windows: runtime check failed: (_tmp2_ != NULL)
[WARN 17:25:32.710099] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:33.897397] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:38.134381] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:38.341122] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:38.401354] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:39.008194] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:47.252314] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:25:47.368723] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE
[WARN 17:26:22.937858] [Wnck] Unhandled action type _OB_WM_ACTION_UNDECORATE

This is on a default configuration of Plank. Despite these error messages I am not experiencing any issues.

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System overview:

 - Ubuntu 12.04.2 LTS with LXDE/Openbox and xcompmgr
 - Linux 3.8.2
 - AMD Mobility Radeon HD 5650 on Catalyst 13.1
 - custom GTK theme and iconset

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Additional information:

$apt-cache policy plank
plank:
plank:
  Installed: 0.2.0~bzr790-0ubuntu1~12.04~ricotz1
  Candidate: 0.2.0~bzr790-0ubuntu1~12.04~ricotz1
  Version table:

$ Xorg -version

X.Org X Server 1.11.3
Release Date: 2011-12-16
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.42-37-generic x86_64 Ubuntu
Current Operating System: Linux AcerUBN 3.8.2-030802-generic #201303031906 SMP Mon Mar 4 00:07:09 UTC 2013 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.8.2-030802-generic root=UUID=e63fa8a2-432f-4749-b9db-dab328807d04 ro quiet splash vt.handoff=7
Build Date: 27 February 2013 02:07:42AM
xorg-server 2:1.11.4-0ubuntu10.12 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.24.4
 Before reporting problems, check http://wiki.x.org
 to make sure that you have the latest version.

$ uname -r
3.8.2-030802-generic

$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04

$ apt-cache policy openbox
openbox:
  Installed: 3.5.0-2ubuntu2-bugfix
  Candidate: 3.5.0-2ubuntu2-bugfix

$apt-cache policy fglrx
fglrx:
  Installed: 2:9.012-0ubuntu1
  Candidate: 2:9.012-0ubuntu1