Two warnings when creating a TreeStore

[José Alburquerque <jaalburquerque cox net>]

Hi all.  I'm working on my first (though not as easy as I thought) 
project.  :-)  For what I'm doing I'm using a TreeView and a 
corresponding TreeStore model.  I posted on this before in a thread 
called "Displaying a 'hierarchy' of classes in a TreeView", but I've 
moved further along (thank you Aaron for the link you sent me it was 
very helpful!) and I'm sort of stuck on some warnings I'm now getting.

I get the warnings after I create the TreeStore using a single column 
TreeModelColumnRecord class that looks like the following:

   class Columns : public TreeModelColumnRecord {
   public:
       Columns()
           { add(element); }
       TreeModelColumn<Element> element;
   };

   Columns columns;

These are the warnings I'm getting (I haven't added any rows to the 
TreeStore yet):

(process:19528): GLib-GObject-CRITICAL **: 
/build/buildd/glib2.0-2.14.0/gobject/gtype.c:2242: initialization 
assertion failed, use IA__g_type_init() prior to this function

(gdvdauthor:19528): Gtk-WARNING **: 
/build/buildd/gtk+2.0-2.10.13/gtk/gtktreestore.c:323: Invalid type (null)


Would anyone know why I'm getting these warnings when I create the 
TreeStore?  BTW, The "Element" class is a user defined type that 
represents a "node" (single column row) in a tree I'm trying to build 
(from my own custom type).  It just looks like the following:

   class Element {
   public:
       Element();
       virtual ustring getName(void);
   };

Please help.  I'd really appreciate it.  Thanks.

Sincerely
Jose