In one of my dev environments, I'm having an issue with loading Shipping Rates.
I have action 39, checkout shipping in BrilliantRetail. When I go to the checkout page, the loading.gif spins, then nothing. The network debugging tool in Chrome just shows FAILURE for every "?ACT=39" call.
Any ideas on what to check? The same code is being used in several different dev environments and a production site with no problems.