[gtkmm] Help with Gtk::Table

[Ian Michell <ian michell hanzi co uk>]

Hi there,

I ma having trouble using Gtk::Table, My app compiles OK but this is
what I end up getting when I run my program:

(mashpos:4984): Gtk-CRITICAL **: file gtktable.c: line 600
(gtk_table_attach): assertion `left_attach < right_attach' failed
 
(mashpos:4984): Gtk-CRITICAL **: file gtktable.c: line 600
(gtk_table_attach): assertion `left_attach

Can anyone tell me what this problem means? Do you need to see my code
as well?

Ian