warnings in 1.8.4

[Nikos Charonitakis]

i get these errors when i launch 1.8.4 in greek

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$ export LANG=el_GR gnucash
$ gnucash
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Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1067 
(gtk_signal_handler_block_by_data):
  assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkCheckMenuItem'

Gtk-CRITICAL **: file gtkcheckmenuitem.c: line 143 
(gtk_check_menu_item_set_acti
ve): assertion `check_menu_item != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1152 
(gtk_signal_handler_unblock_by_data
): assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1067 
(gtk_signal_handler_block_by_data):
  assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkCheckMenuItem'

Gtk-CRITICAL **: file gtkcheckmenuitem.c: line 143 
(gtk_check_menu_item_set_acti
ve): assertion `check_menu_item != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1152 
(gtk_signal_handler_unblock_by_data
): assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1067 
(gtk_signal_handler_block_by_data):
  assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkCheckMenuItem'

Gtk-CRITICAL **: file gtkcheckmenuitem.c: line 143 
(gtk_check_menu_item_set_acti
ve): assertion `check_menu_item != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1152 
(gtk_signal_handler_unblock_by_data
): assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkObject'

Gtk-CRITICAL **: file gtksignal.c: line 1067 
(gtk_signal_handler_block_by_data):
  assertion `object != NULL' failed.

Gtk-WARNING **: invalid cast from (NULL) pointer to `GtkCheckMenuItem'