Here's the output again, with a different exception:

davidz@kauai:~> gnome-do

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_localestring: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed

** (Do:7330): CRITICAL **: gnome_desktop_item_get_string: assertion `item != NULL' failed
Could not read Gnome Bookmarks file /home/davidz/.gtk-bookmarks: Could not find file "/home/davidz/.gtk-bookmarks".
Universe contains 242 items.
The remote server returned an error: (999) Unable to process request at this time -- error 999.
Reload
Could not read Gnome Bookmarks file /home/davidz/.gtk-bookmarks: Could not find file "/home/davidz/.gtk-bookmarks".
The remote server returned an error: (999) Unable to process request at this time -- error 999.

** (Do:7330): WARNING **: The following assembly referenced from /home/davidz/.local/share/gnome-do/plugins-0.6.0/addins/Do.GNOMETerminal.1.0/GNOME-Terminal.dll could not be loaded:
     Assembly:   gconf-sharp    (assemblyref_index=1)
     Version:    2.20.0.0
     Public Key: 35e10195dab3c99f
The assembly was not found in the Global Assembly Cache, a path listed in the MONO_PATH environment variable, or in the location of the executing assembly (/home/davidz/.local/share/gnome-do/plugins-0.6.0/addins/Do.GNOMETerminal.1.0).


** (Do:7330): WARNING **: Could not load file or assembly 'gconf-sharp, Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one of its dependencies.

** (Do:7330): WARNING **: Could not load file or assembly 'gconf-sharp, Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one of its dependencies.
[Error 22:53:44.869] "Gnome Terminal Profiles" 
    (GNOME.Terminal.ProfileItemSource) encountered an error in UpdateItems: 
    Could not load file or assembly 'gconf-sharp, Version=2.20.0.0, 
    Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one of its 
    dependencies. 
Universe contains 246 items.
Could not locate Tasque on D-Bus. Make sure Tasque is running
Could not read Tasque's category

** (Do:7330): WARNING **: The following assembly referenced from /home/davidz/.local/share/gnome-do/plugins-0.6.0/addins/Do.SSH.1.0/SSH.dll could not be loaded:
     Assembly:   gconf-sharp    (assemblyref_index=1)
     Version:    2.20.0.0
     Public Key: 35e10195dab3c99f
The assembly was not found in the Global Assembly Cache, a path listed in the MONO_PATH environment variable, or in the location of the executing assembly (/home/davidz/.local/share/gnome-do/plugins-0.6.0/addins/Do.SSH.1.0).


** (Do:7330): WARNING **: Could not load file or assembly 'gconf-sharp, Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one of its dependencies.
[Error 22:54:21.486] "Connect with SSH" (GnomeDoSSH.SSHAction) encountered an 
    error in Perform: Could not load file or assembly 'gconf-sharp, 
    Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one 
    of its dependencies. 
Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.IO.FileNotFoundException: Could not load file or assembly 'gconf-sharp, Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f' or one of its dependencies.
File name: 'gconf-sharp, Version=2.20.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f'
  at Do.Core.SimpleUniverseManager.<Initialize>m__18 () [0x00000] 
  at GLib.Timeout+TimeoutProxy.Handler () [0x00000] 
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at GLib.Timeout+TimeoutProxy.Handler()
   at Gtk.Application.gtk_main()
   at Gtk.Application.Run()
   at Do.Do.Main(System.String[] args)
davidz@kauai:~>