I did get some additional data since I had firefox running from a cmd line:

mcampbell@foo:~$ vmware
Launching VMware Web Access using /usr/bin/xdg-open
mcampbell@foo:~$ 
(npviewer.bin:7093): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:7296): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:7296): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID

(npviewer.bin:7613): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:7613): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
Configuring libraries for first use
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/pango/pango.modules
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/pango/pangorc
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/pango/pangox.aliases
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/fonts/fonts.dtd
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/fonts/local.conf
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/fonts/fonts.conf
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/gtk-2.0/gdk-pixbuf.loaders
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/gtk-2.0/Clearlooks.gtkrc
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/gtk-2.0/gtkrc
Configured /home/mcampbell<email address hidden>/plugins/libconf/etc/gtk-2.0/gtk.immodules
/home/mcampbell<email address hidden>/plugins/lib/wrapper-gtk24.sh: 26: 0: not found
Configuration successful

(npviewer.bin:9251): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:9251): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Message type invalid
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_WriteReady() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_Write() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_DestroyStream() invoke: Connection closed

(firefox:6964): GLib-CRITICAL **: g_hash_table_remove_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x2a54fd0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x2aeefe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x4aef2b0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c53aa0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x34cafe0 is not valid!

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14268): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Message type invalid
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Message type invalid

(firefox:6964): GLib-CRITICAL **: g_hash_table_insert_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Broken pipe
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Connection closed

(firefox:6964): GLib-CRITICAL **: g_hash_table_insert_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Connection closed

(firefox:6964): GLib-CRITICAL **: g_hash_table_insert_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_WriteReady() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_Write() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_DestroyStream() invoke: Connection closed

(firefox:6964): GLib-CRITICAL **: g_hash_table_remove_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_SetWindow() invoke: Connection closed

(firefox:6964): GLib-CRITICAL **: g_hash_table_insert_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x6183fe0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x5219e60 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x2ecae30 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x707ef40 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x5d66e20 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x3ed01f0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x2918850 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x313c480 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x5c557d0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x4a46ab0 is not valid!
*** NSPlugin Wrapper *** ERROR: NPP_Destroy() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPObject 0x5baa780 is not valid!

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_style_detach: assertion `style->attach_count > 0' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:14312): Gtk-CRITICAL **: gtk_widget_destroy: assertion `GTK_IS_WIDGET (widget)' failed
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Connection closed
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: could not reconstruct XVisual from visualID
*** NSPlugin Viewer  *** ERROR: NPN_GetValue() invoke: Message type invalid
*** NSPlugin Viewer  *** WARNING: unhandled variable 15 in NPN_GetValue()
*** NSPlugin Viewer  *** ERROR: NPN_GetURLNotify() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_WriteReady() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_Write() invoke: Message type invalid
*** NSPlugin Wrapper *** ERROR: NPP_DestroyStream() invoke: Message type invalid

(firefox:6964): GLib-CRITICAL **: g_hash_table_remove_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Broken pipe

(firefox:6964): GLib-CRITICAL **: g_hash_table_insert_internal: assertion `hash_table != NULL' failed
*** NSPlugin Wrapper *** ERROR: NPP_NewStream() invoke: Connection closed
*** NSPlugin Wrapper *** ERROR: NPP_URLNotify() invoke: Connection closed




Hope that this can help in some way...

Mark