[Elecraft] K3Util and P3Util Error: Help System encountered a problem. [Linux Ubuntu 10.04]

[Larry J on Ubuntu 10.04 Desktop]

When I click the menu item Help in the K3Util and P3Util,  I see a popup that says "The help System encountered a problem.  The GtkHTML library required by the HTML Help Viewer is not installed".

If I start the K3Util in a terminal (using  Ubuntu 10.04 LTS),  then I see
>  ./p3util
> Could not load libGtkHTML
> /usr/lib/gio/modules/libgvfsdbus.so: wrong ELF class: ELFCLASS64
> Failed to load module: /usr/lib/gio/modules/libgvfsdbus.so
So I assume I'm missing the  64 bit package that provides  libgvfsdbus.so.   Does anyone know what that package is?

Thanks,
Larry W0AY