Thanks for the update that this worked for you ...

It was a good catch to run into this in FedEx as I see FedEx needs this extra code for the:
Code:
        if (sizeof($methods) == 0) return false;
        $this->quotes['methods'] = $methods;
as well as UPS ... it only happens when the configuration has settings that result in no quotes such as configuring the shipping module to only show for National or International shipping but not both or when the selected options all result in no quote ...

USPS already has this code in it in the July 28, 2013 J5 release so that one does not run into this issue ...