Forum: Ruby-Gnome 2 Gtk-CRITICAL **:gtk_tree_row_reference_new_proxy: assertion `path->depth > 0' failed

hi,

I want to unset the cursor for a TreeView.
There is no method for it, i have to call
TreeView.set_cursor(Gtk::TreePath.new,nil,nil)
- according to 
http://library.gnome.org/devel/gtk/stable/GtkTreeView.html :
   - gtk_tree_view_set_cursor (): If path is invalid for model, the
current cursor (if any) will be unset and the function will return
without failing

this is true, it does unset the cursor, but prints this output on the
console:    Gtk-CRITICAL **:gtk_tree_row_reference_new_proxy: assertion
`path->depth > 0' failed
Thus i'm not sure if this is the right way for unsetting the cursor.
Anyone know the right way?

thanks