GLib-GObject-WARNING when doing Gtk::Main::quit

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When I do Gtk::Main::quit on the destructor of the class I get the following 
output:


(proyecto2:22098): GLib-GObject-WARNING **: gsignal.c:1738: instance 
`0x99a0688' has no handler with id `50'

(proyecto2:22098): GLib-GObject-WARNING **: gsignal.c:1738: instance 
`0x99a0710' has no handler with id `51'


What I'm missing to do on the destructor before doing de Gtk::Main::quit?

I think I've cleared all the non-managed pointers and stopped all the 
SigC::Connection.


I'm using gtkmm-2.2.12-1 on a RedHat Enterprise Linux AS release 4.