Controller - >Event- Listeners not working anymore

It seems that all my Controller listeners not working anymore. I get the following message:

if (!fn) {

Ext.Error.raise({

sourceClass: Ext.getClassName(this.observable),

sourceMethod: "addListener",

msg: "The specified callback function is undefined"

});

}

I have something like this:

Code:

init : function() {
        this.control({
            'admindevicespanel' : {
                beforeshow : this.beforePanelShowed
            },
            'admindevicespanel button[name=deleteDevice]' : {
                click : this.deleteAdminDevice
            }
        });
},

Any ideas?